{"cve":"CVE-2009-0591","nvd":{"published":"2009-03-27T16:30:01.920","modified":"2026-06-16T23:05:22.593","status":"Modified","description":"The CMS_verify function in OpenSSL 0.9.8h through 0.9.8j, when CMS is enabled, does not properly handle errors associated with malformed signed attributes, which allows remote attackers to repudiate a signature that originally appeared to be valid but was actually invalid.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-287"],"references":["ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2009-008.txt.asc","http://lists.apple.com/archives/security-announce/2009/Sep/msg00004.html","http://lists.opensuse.org/opensuse-security-announce/2009-05/msg00000.html","http://marc.info/?l=bugtraq&m=124464882609472&w=2","http://marc.info/?l=bugtraq&m=127678688104458&w=2"],"products":["openssl:openssl"],"source":"nvd","synced_at":"2026-10-19T19:54:07.895733559+00:00"},"epss":{"cve":"CVE-2009-0591","score":0.02735,"percentile":0.86112,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}