{"id":"CVE-2026-43798","state":"PUBLISHED","title":"A single crafted SSH message gives an unauthenticated network attacker an out-of-bounds stack write of attacker-controlled length and content against any application built on swift","description":"A single crafted SSH message gives an unauthenticated network attacker an out-of-bounds stack write of attacker-controlled length and content against any application built on swift-nio-ssh. This vulnerability is addressed in swift-nio-ssh version 0.14.1.","publishedAt":"2026-08-20T21:07:01.719Z","updatedAt":"2026-08-26T14:05:32.813Z","severity":{"score":9.8,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"apple","products":["Apple swift-nio-ssh"],"affected":[{"vendor":"Apple","product":"swift-nio-ssh","versions":[{"version":"0","status":"affected","lessThan":"0.14.1","versionType":"custom"}]}],"references":["https://github.com/apple/swift-nio-ssh/security/advisories/GHSA-998x-vgvp-xwpc"],"weaknesses":["CWE-121"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/43xxx/CVE-2026-43798.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43798","state":"PUBLISHED","datePublished":"2026-08-20T21:07:01.719Z","dateUpdated":"2026-08-26T14:05:32.813Z","assignerShortName":"apple","assignerOrgId":"286789f9-fbc2-4510-9f9a-43facdede74c","dateReserved":"2026-05-01T22:46:27.820Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"A single crafted SSH message gives an unauthenticated network attacker an out-of-bounds stack write of attacker-controlled length and content against any application built on swift-nio-ssh. This vulnerability is addressed in swift-nio-ssh version 0.14.1."}],"affected":[{"vendor":"Apple","product":"swift-nio-ssh","versions":[{"version":"0","status":"affected","lessThan":"0.14.1","versionType":"custom"}]}],"references":[{"url":"https://github.com/apple/swift-nio-ssh/security/advisories/GHSA-998x-vgvp-xwpc"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"A single crafted SSH message gives an unauthenticated network attacker an out-of-bounds stack write of attacker-controlled length and content against any application built on swift-nio-ssh."}]}],"providerMetadata":{"shortName":"apple","orgId":"286789f9-fbc2-4510-9f9a-43facdede74c","dateUpdated":"2026-08-20T21:08:48.199Z"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.8,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-08-26T14:05:29.478852Z","id":"CVE-2026-43798","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-121","type":"CWE","lang":"en","description":"CWE-121 Stack-based Buffer Overflow"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-26T14:05:32.813Z"}}]}}}