{"api_version":"1","generated_at":"2026-07-03T10:54:45+00:00","cve":"CVE-2025-5987","urls":{"html":"https://cve.report/CVE-2025-5987","api":"https://cve.report/api/cve/CVE-2025-5987.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2025-5987","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-5987"},"summary":{"title":"Libssh: invalid return code for chacha20 poly1305 with openssl backend","description":"A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the heap space, this error is not detected and may lead to libssh using a partially initialized cipher context. This occurs because the OpenSSL error code returned aliases with the SSH_OK code, resulting in libssh not properly detecting the error returned by the OpenSSL library. This issue can lead to undefined behavior, including compromised data confidentiality and integrity or crashes.","state":"PUBLISHED","assigner":"redhat","published_at":"2025-07-07 15:15:28","updated_at":"2026-06-30 11:16:26"},"problem_types":["CWE-393","CWE-393 Return of Wrong Status Code"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Secondary","score":"8.1","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"secalert@redhat.com","type":"Secondary","score":"8.1","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"CVSS","score":"8.1","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:0985","name":"https://access.redhat.com/errata/RHSA-2026:0985","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://access.redhat.com/errata/RHSA-2026:0427","name":"https://access.redhat.com/errata/RHSA-2026:0427","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.libssh.org/security/advisories/CVE-2025-5987.txt","name":"https://www.libssh.org/security/advisories/CVE-2025-5987.txt","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://access.redhat.com/errata/RHSA-2026:0431","name":"https://access.redhat.com/errata/RHSA-2026:0431","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://access.redhat.com/errata/RHSA-2026:0978","name":"https://access.redhat.com/errata/RHSA-2026:0978","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://access.redhat.com/errata/RHSA-2025:23484","name":"https://access.redhat.com/errata/RHSA-2025:23484","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://access.redhat.com/errata/RHSA-2026:0980","name":"https://access.redhat.com/errata/RHSA-2026:0980","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://access.redhat.com/errata/RHSA-2026:0702","name":"https://access.redhat.com/errata/RHSA-2026:0702","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2376219","name":"https://bugzilla.redhat.com/show_bug.cgi?id=2376219","refsource":"secalert@redhat.com","tags":["Issue Tracking","Third Party Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://access.redhat.com/errata/RHSA-2026:0996","name":"https://access.redhat.com/errata/RHSA-2026:0996","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://access.redhat.com/errata/RHSA-2026:3415","name":"https://access.redhat.com/errata/RHSA-2026:3415","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://access.redhat.com/errata/RHSA-2026:0430","name":"https://access.redhat.com/errata/RHSA-2026:0430","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://access.redhat.com/security/cve/CVE-2025-5987","name":"https://access.redhat.com/security/cve/CVE-2025-5987","refsource":"secalert@redhat.com","tags":["Third Party Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://access.redhat.com/errata/RHSA-2026:0428","name":"https://access.redhat.com/errata/RHSA-2026:0428","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://access.redhat.com/errata/RHSA-2025:23483","name":"https://access.redhat.com/errata/RHSA-2025:23483","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://access.redhat.com/errata/RHSA-2026:1539","name":"https://access.redhat.com/errata/RHSA-2026:1539","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://access.redhat.com/errata/RHSA-2026:1541","name":"https://access.redhat.com/errata/RHSA-2026:1541","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-5987","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-5987","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","version":"unaffected 0:0.11.1-5.el10_1 * rpm","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat Enterprise Linux 10.0 Extended Update Support","version":"unaffected 0:0.11.1-4.el10_0.1 * rpm","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","version":"unaffected 0:0.10.4-17.el9_7 * rpm","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","version":"unaffected 0:0.10.4-17.el9_7 * rpm","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions","version":"unaffected 0:0.10.4-9.el9_2.2 * rpm","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9.4 Extended Update Support","version":"unaffected 0:0.10.4-13.el9_4.2 * rpm","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9.6 Extended Update Support","version":"unaffected 0:0.10.4-15.el9_6.1 * rpm","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4.13","version":"unaffected 413.92.202602240113-0 * rpm","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4.14","version":"unaffected 414.92.202601191325-0 * rpm","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4.15","version":"unaffected 415.92.202601271320-0 * rpm","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4.16","version":"unaffected 416.94.202601160124-0 * rpm","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4.17","version":"unaffected 417.94.202601120213-0 * rpm","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4.18","version":"unaffected 418.94.202601202224-0 * rpm","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4.19","version":"unaffected 4.19.9.6.202601260820-0 * rpm","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4.20","version":"unaffected 4.20.9.6.202601211057-0 * rpm","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat Enterprise Linux 6","version":"","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat Enterprise Linux 7","version":"","platforms":[]},{"source":"CNA","vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","version":"","platforms":[]}],"timeline":[{"source":"CNA","time":"2025-07-03T21:55:26.394Z","lang":"en","value":"Reported to Red Hat."},{"source":"CNA","time":"2025-04-26T00:00:00.000Z","lang":"en","value":"Made public."}],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2025","cve_id":"5987","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"libssh","cpe5":"libssh","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2025","cve_id":"5987","cve":"CVE-2025-5987","epss":"0.014400000","percentile":"0.699440000","score_date":"2026-07-02","updated_at":"2026-07-03 00:06:14"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2025-5987","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","timestamp":"2026-01-22T04:55:55.619672Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-02-26T18:27:55.575Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"collectionURL":"https://www.libssh.org/","defaultStatus":"unaffected","packageName":"libssh","versions":[{"lessThan":"0.11.2","status":"affected","version":"0.10.0","versionType":"semver"}]},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10.1"],"defaultStatus":"affected","packageName":"libssh","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:0.11.1-5.el10_1","versionType":"rpm"}]},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux_eus:10.0"],"defaultStatus":"affected","packageName":"libssh","product":"Red Hat Enterprise Linux 10.0 Extended Update Support","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:0.11.1-4.el10_0.1","versionType":"rpm"}]},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:enterprise_linux:9::appstream","cpe:/o:redhat:enterprise_linux:9::baseos"],"defaultStatus":"affected","packageName":"libssh","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:0.10.4-17.el9_7","versionType":"rpm"}]},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:enterprise_linux:9::appstream","cpe:/o:redhat:enterprise_linux:9::baseos"],"defaultStatus":"affected","packageName":"libssh","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:0.10.4-17.el9_7","versionType":"rpm"}]},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:rhel_e4s:9.2::appstream","cpe:/o:redhat:rhel_e4s:9.2::baseos"],"defaultStatus":"affected","packageName":"libssh","product":"Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:0.10.4-9.el9_2.2","versionType":"rpm"}]},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:rhel_eus:9.4::appstream","cpe:/o:redhat:rhel_eus:9.4::baseos"],"defaultStatus":"affected","packageName":"libssh","product":"Red Hat Enterprise Linux 9.4 Extended Update Support","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:0.10.4-13.el9_4.2","versionType":"rpm"}]},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:rhel_eus:9.6::appstream","cpe:/o:redhat:rhel_eus:9.6::baseos"],"defaultStatus":"affected","packageName":"libssh","product":"Red Hat Enterprise Linux 9.6 Extended Update Support","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:0.10.4-15.el9_6.1","versionType":"rpm"}]},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4.13::el9"],"defaultStatus":"affected","packageName":"rhcos","product":"Red Hat OpenShift Container Platform 4.13","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"413.92.202602240113-0","versionType":"rpm"}]},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4.14::el9"],"defaultStatus":"affected","packageName":"rhcos","product":"Red Hat OpenShift Container Platform 4.14","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"414.92.202601191325-0","versionType":"rpm"}]},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4.15::el9"],"defaultStatus":"affected","packageName":"rhcos","product":"Red Hat OpenShift Container Platform 4.15","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"415.92.202601271320-0","versionType":"rpm"}]},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4.16::el9"],"defaultStatus":"affected","packageName":"rhcos","product":"Red Hat OpenShift Container Platform 4.16","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"416.94.202601160124-0","versionType":"rpm"}]},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4.17::el9"],"defaultStatus":"affected","packageName":"rhcos","product":"Red Hat OpenShift Container Platform 4.17","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"417.94.202601120213-0","versionType":"rpm"}]},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4.18::el9"],"defaultStatus":"affected","packageName":"rhcos","product":"Red Hat OpenShift Container Platform 4.18","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"418.94.202601202224-0","versionType":"rpm"}]},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4.19::el9"],"defaultStatus":"affected","packageName":"rhcos","product":"Red Hat OpenShift Container Platform 4.19","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"4.19.9.6.202601260820-0","versionType":"rpm"}]},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4.20::el9"],"defaultStatus":"affected","packageName":"rhcos","product":"Red Hat OpenShift Container Platform 4.20","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"4.20.9.6.202601211057-0","versionType":"rpm"}]},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"unknown","packageName":"libssh2","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unknown","packageName":"libssh2","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"unaffected","packageName":"libssh","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}],"datePublic":"2025-04-26T00:00:00.000Z","descriptions":[{"lang":"en","value":"A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the heap space, this error is not detected and may lead to libssh using a partially initialized cipher context. This occurs because the OpenSSL error code returned aliases with the SSH_OK code, resulting in libssh not properly detecting the error returned by the OpenSSL library. This issue can lead to undefined behavior, including compromised data confidentiality and integrity or crashes."}],"metrics":[{"other":{"content":{"namespace":"https://access.redhat.com/security/updates/classification/","value":"Moderate"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-393","description":"Return of Wrong Status Code","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-06-30T10:40:14.322Z","orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","shortName":"redhat"},"references":[{"name":"RHSA-2025:23483","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2025:23483"},{"name":"RHSA-2025:23484","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2025:23484"},{"name":"RHSA-2026:0427","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:0427"},{"name":"RHSA-2026:0428","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:0428"},{"name":"RHSA-2026:0430","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:0430"},{"name":"RHSA-2026:0431","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:0431"},{"name":"RHSA-2026:0702","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:0702"},{"name":"RHSA-2026:0978","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:0978"},{"name":"RHSA-2026:0980","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:0980"},{"name":"RHSA-2026:0985","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:0985"},{"name":"RHSA-2026:0996","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:0996"},{"name":"RHSA-2026:1539","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:1539"},{"name":"RHSA-2026:1541","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:1541"},{"name":"RHSA-2026:3415","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:3415"},{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2025-5987"},{"name":"RHBZ#2376219","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2376219"},{"url":"https://www.libssh.org/security/advisories/CVE-2025-5987.txt"}],"timeline":[{"lang":"en","time":"2025-07-03T21:55:26.394Z","value":"Reported to Red Hat."},{"lang":"en","time":"2025-04-26T00:00:00.000Z","value":"Made public."}],"title":"Libssh: invalid return code for chacha20 poly1305 with openssl backend","x_generator":{"engine":"cvelib 1.8.0"},"x_redhatCweChain":"CWE-393: Return of Wrong Status Code"}},"cveMetadata":{"assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","assignerShortName":"redhat","cveId":"CVE-2025-5987","datePublished":"2025-07-07T14:24:12.576Z","dateReserved":"2025-06-10T21:55:45.552Z","dateUpdated":"2026-06-30T10:40:14.322Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2025-07-07 15:15:28","lastModifiedDate":"2026-06-30 11:16:26","problem_types":["CWE-393","CWE-393 Return of Wrong Status Code"],"metrics":{"cvssMetricV31":[{"source":"secalert@redhat.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.2,"impactScore":5.9},{"source":"nvd@nist.gov","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.2,"impactScore":5.9}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-01-22T04:55:55.619672Z","id":"CVE-2025-5987","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:*","versionStartIncluding":"0.10.0","versionEndExcluding":"0.11.2","matchCriteriaId":"28859F90-CC03-4355-AC1B-E595AE86511A"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2025","CveId":"5987","Ordinal":"1","Title":"Libssh: invalid return code for chacha20 poly1305 with openssl b","CVE":"CVE-2025-5987","Year":"2025"},"notes":[{"CveYear":"2025","CveId":"5987","Ordinal":"1","NoteData":"A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the heap space, this error is not detected and may lead to libssh using a partially initialized cipher context. This occurs because the OpenSSL error code returned aliases with the SSH_OK code, resulting in libssh not properly detecting the error returned by the OpenSSL library. This issue can lead to undefined behavior, including compromised data confidentiality and integrity or crashes.","Type":"Description","Title":"Libssh: invalid return code for chacha20 poly1305 with openssl b"}]}}}