CVE-2026-43798

{"id": "CVE-2026-43798", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-43798", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-08-26T14:05:29.478852Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"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"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "affected": [{"source": "product-security@apple.com", "affectedData": [{"vendor": "Apple", "product": "swift-nio-ssh", "versions": [{"status": "affected", "version": "0", "lessThan": "0.14.1", "versionType": "custom"}]}]}], "published": "2026-08-20T21:17:06.580", "references": [{"url": "https://github.com/apple/swift-nio-ssh/security/advisories/GHSA-998x-vgvp-xwpc", "tags": ["Vendor Advisory", "Patch"], "source": "product-security@apple.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-121"}]}], "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."}], "lastModified": "2026-09-03T13:35:56.153", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:apple:swiftnio_ssh:*:*:*:*:*:swift:*:*", "vulnerable": true, "matchCriteriaId": "146E01C2-0053-4C07-8D48-46128664F3B6", "versionEndExcluding": "0.14.1"}], "operator": "OR"}]}], "sourceIdentifier": "product-security@apple.com"}