CVE-2026-27171

{"id": "CVE-2026-27171", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "cve@mitre.org", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 2.9, "attackVector": "LOCAL", "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 1.4}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2026-02-18T04:16:01.263", "references": [{"url": "https://7asecurity.com/blog/2026/02/zlib-7asecurity-audit/", "tags": ["Product"], "source": "cve@mitre.org"}, {"url": "https://7asecurity.com/reports/pentest-report-zlib-RC1.1.pdf", "tags": ["Technical Description"], "source": "cve@mitre.org"}, {"url": "https://github.com/madler/zlib/issues/904", "tags": ["Issue Tracking", "Exploit"], "source": "cve@mitre.org"}, {"url": "https://github.com/madler/zlib/releases/tag/v1.3.2", "tags": ["Release Notes"], "source": "cve@mitre.org"}, {"url": "https://ostif.org/zlib-audit-complete/", "tags": ["Product"], "source": "cve@mitre.org"}, {"url": "https://7asecurity.com/reports/pentest-report-zlib-RC1.1.pdf", "tags": ["Technical Description"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "cve@mitre.org", "description": [{"lang": "en", "value": "CWE-1284"}]}], "descriptions": [{"lang": "en", "value": "zlib before 1.3.2 allows CPU consumption via crc32_combine64 and crc32_combine_gen64 because x2nmodp can do right shifts within a loop that has no termination condition."}, {"lang": "es", "value": "zlib anterior a 1.3.2 permite el consumo de CPU a trav\u00e9s de crc32_combine64 y crc32_combine_gen64 porque x2nmodp puede realizar desplazamientos a la derecha dentro de un bucle que no tiene condici\u00f3n de terminaci\u00f3n."}], "lastModified": "2026-02-20T16:45:28.827", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:zlib:zlib:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8AC91442-9A81-4D5E-BDC2-542C48FE458D", "versionEndExcluding": "1.3.2"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}