{"api_version":"1","generated_at":"2026-07-23T12:53:51+00:00","cve":"CVE-2026-7837","urls":{"html":"https://cve.report/CVE-2026-7837","api":"https://cve.report/api/cve/CVE-2026-7837.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-7837","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-7837"},"summary":{"title":"TOCTOU with root privilege in ad_flush","description":"A time-of-check time-of-use (TOCTOU) condition in the ad_flush function in Netatalk 3.0.0 through 4.4.2 involves root-privileged file operations, which may allow a remote attacker to cause limited data modification under specific race conditions.","state":"PUBLISHED","assigner":"securin","published_at":"2026-05-21 09:16:30","updated_at":"2026-05-21 15:20:19"},"problem_types":["CWE-367","CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition"],"metrics":[{"version":"3.1","source":"33c584b5-0579-4c06-b2a0-8d8329fcab9c","type":"Secondary","score":"3.7","severity":"LOW","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","baseScore":3.7,"baseSeverity":"LOW","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"3.7","severity":"LOW","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","data":{"baseScore":3.7,"baseSeverity":"LOW","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"}}],"references":[{"url":"https://netatalk.io/security/CVE-2026-7837","name":"https://netatalk.io/security/CVE-2026-7837","refsource":"33c584b5-0579-4c06-b2a0-8d8329fcab9c","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-7837","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-7837","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Netatalk","product":"Netatalk","version":"affected 3.0.0 4.4.2 semver","platforms":[]},{"source":"CNA","vendor":"Netatalk","product":"Netatalk","version":"unaffected 4.5.0 semver","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Arjun Basnet from Securin","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"7837","cve":"CVE-2026-7837","epss":"0.000470000","percentile":"0.146290000","score_date":"2026-05-27","updated_at":"2026-05-28 00:02:13"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-7837","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-05-21T12:50:24.950225Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-05-21T12:50:33.383Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"defaultStatus":"unaffected","product":"Netatalk","vendor":"Netatalk","versions":[{"lessThanOrEqual":"4.4.2","status":"affected","version":"3.0.0","versionType":"semver"},{"status":"unaffected","version":"4.5.0","versionType":"semver"}]}],"credits":[{"lang":"en","type":"finder","value":"Arjun Basnet from Securin"}],"datePublic":"2026-05-13T00:00:00.000Z","descriptions":[{"lang":"en","value":"A time-of-check time-of-use (TOCTOU) condition in the ad_flush function in Netatalk 3.0.0 through 4.4.2 involves root-privileged file operations, which may allow a remote attacker to cause limited data modification under specific race conditions."}],"metrics":[{"cvssV3_1":{"baseScore":3.7,"baseSeverity":"LOW","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-367","description":"Time-of-check Time-of-use (TOCTOU) Race Condition","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-05-21T08:23:46.648Z","orgId":"33c584b5-0579-4c06-b2a0-8d8329fcab9c","shortName":"securin"},"references":[{"name":"Netatalk Security Advisory CVE-2026-7837","tags":["vendor-advisory"],"url":"https://netatalk.io/security/CVE-2026-7837"}],"title":"TOCTOU with root privilege in ad_flush"}},"cveMetadata":{"assignerOrgId":"33c584b5-0579-4c06-b2a0-8d8329fcab9c","assignerShortName":"securin","cveId":"CVE-2026-7837","datePublished":"2026-05-21T08:14:44.776Z","dateReserved":"2026-05-05T07:25:36.674Z","dateUpdated":"2026-05-21T12:50:33.383Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-21 09:16:30","lastModifiedDate":"2026-05-21 15:20:19","problem_types":["CWE-367","CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition"],"metrics":{"cvssMetricV31":[{"source":"33c584b5-0579-4c06-b2a0-8d8329fcab9c","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","baseScore":3.7,"baseSeverity":"LOW","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.2,"impactScore":1.4}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"7837","Ordinal":"1","Title":"TOCTOU with root privilege in ad_flush","CVE":"CVE-2026-7837","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"7837","Ordinal":"1","NoteData":"A time-of-check time-of-use (TOCTOU) condition in the ad_flush function in Netatalk 3.0.0 through 4.4.2 involves root-privileged file operations, which may allow a remote attacker to cause limited data modification under specific race conditions.","Type":"Description","Title":"TOCTOU with root privilege in ad_flush"}]}}}