{"dataType":"CVE_RECORD","cveMetadata":{"cveId":"CVE-2026-27171","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","state":"PUBLISHED","assignerShortName":"mitre","dateReserved":"2026-02-18T02:36:19.339Z","datePublished":"2026-02-18T02:36:19.509Z","dateUpdated":"2026-02-18T13:38:55.713Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"zlib","vendor":"zlib","versions":[{"lessThan":"1.3.2","status":"affected","version":"0","versionType":"semver"}]}],"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."}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"LOW","baseScore":2.9,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1284","description":"CWE-1284 Improper Validation of Specified Quantity in Input","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","shortName":"mitre","dateUpdated":"2026-02-18T02:44:09.091Z"},"references":[{"url":"https://github.com/madler/zlib/issues/904"},{"url":"https://7asecurity.com/reports/pentest-report-zlib-RC1.1.pdf"},{"url":"https://7asecurity.com/blog/2026/02/zlib-7asecurity-audit/"},{"url":"https://ostif.org/zlib-audit-complete/"},{"url":"https://github.com/madler/zlib/releases/tag/v1.3.2"}],"x_generator":{"engine":"CVE-Request-form 0.0.1"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:zlib:zlib:*:*:*:*:*:*:*:*","versionEndExcluding":"1.3.2"}]}]}]},"adp":[{"references":[{"url":"https://7asecurity.com/reports/pentest-report-zlib-RC1.1.pdf","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-18T13:35:50.671404Z","id":"CVE-2026-27171","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-02-18T13:38:55.713Z"}}]},"dataVersion":"5.2"}