{"api_version":"1","generated_at":"2026-05-28T18:48:13+00:00","cve":"CVE-2026-48851","urls":{"html":"https://cve.report/CVE-2026-48851","api":"https://cve.report/api/cve/CVE-2026-48851.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-48851","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-48851"},"summary":{"title":"CVE-2026-48851","description":"PuTTY 0.77 before 0.84 uses a copy of the PuTTY icon as a trust indication for TELNET data but the trust status is not cleared between proxy authentication and the main session.","state":"PUBLISHED","assigner":"mitre","published_at":"2026-05-25 21:16:35","updated_at":"2026-05-27 19:12:40"},"problem_types":["CWE-451","CWE-451 CWE-451 User Interface (UI) Misrepresentation of Critical Information"],"metrics":[{"version":"3.1","source":"cve@mitre.org","type":"Secondary","score":"3.1","severity":"LOW","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N","baseScore":3.1,"baseSeverity":"LOW","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"}},{"version":"3.1","source":"CNA","type":"CVSS","score":"3.1","severity":"LOW","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N","data":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.1,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N","version":"3.1"}}],"references":[{"url":"https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/telnet-trust-sigil.html","name":"https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/telnet-trust-sigil.html","refsource":"cve@mitre.org","tags":["Patch","Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://lists.tartarus.org/pipermail/putty-announce/2026/000042.html","name":"https://lists.tartarus.org/pipermail/putty-announce/2026/000042.html","refsource":"cve@mitre.org","tags":["Release Notes"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-48851","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48851","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"PuTTY","product":"PuTTY","version":"affected 0.77 0.84 custom","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2026","cve_id":"48851","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"putty","cpe5":"putty","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"48851","cve":"CVE-2026-48851","epss":"0.000300000","percentile":"0.090710000","score_date":"2026-05-27","updated_at":"2026-05-28 00:02:12"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-48851","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-05-26T12:40:42.460737Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-05-26T12:40:49.268Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"defaultStatus":"unaffected","product":"PuTTY","vendor":"PuTTY","versions":[{"lessThan":"0.84","status":"affected","version":"0.77","versionType":"custom"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:putty:putty:*:*:*:*:*:*:*:*","versionEndExcluding":"0.84","versionStartIncluding":"0.77","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"PuTTY 0.77 before 0.84 uses a copy of the PuTTY icon as a trust indication for TELNET data but the trust status is not cleared between proxy authentication and the main session."}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.1,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-451","description":"CWE-451 User Interface (UI) Misrepresentation of Critical Information","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-05-25T20:16:31.485Z","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","shortName":"mitre"},"references":[{"url":"https://lists.tartarus.org/pipermail/putty-announce/2026/000042.html"},{"url":"https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/telnet-trust-sigil.html"}],"x_generator":{"engine":"CVE-Request-form 0.0.1"}}},"cveMetadata":{"assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","assignerShortName":"mitre","cveId":"CVE-2026-48851","datePublished":"2026-05-25T20:16:31.485Z","dateReserved":"2026-05-25T20:16:30.998Z","dateUpdated":"2026-05-26T12:40:49.268Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-25 21:16:35","lastModifiedDate":"2026-05-27 19:12:40","problem_types":["CWE-451","CWE-451 CWE-451 User Interface (UI) Misrepresentation of Critical Information"],"metrics":{"cvssMetricV31":[{"source":"cve@mitre.org","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N","baseScore":3.1,"baseSeverity":"LOW","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":1.6,"impactScore":1.4}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:putty:putty:*:*:*:*:*:*:*:*","versionStartIncluding":"0.77","versionEndExcluding":"0.84","matchCriteriaId":"FF65EC81-FDC8-42A3-9608-A005EAA76A21"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"48851","Ordinal":"1","Title":"CVE-2026-48851","CVE":"CVE-2026-48851","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"48851","Ordinal":"1","NoteData":"PuTTY 0.77 before 0.84 uses a copy of the PuTTY icon as a trust indication for TELNET data but the trust status is not cleared between proxy authentication and the main session.","Type":"Description","Title":"CVE-2026-48851"}]}}}