Low 2.6Published Mar 27, 2009

CVE-2009-0591The 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…

Updated under an hour ago (Nov 2, 2026, 12:20 AM ET)

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No exploitation reported and no EPSS estimate yet.

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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: 2.6 LOW (v2.0, NVD)AV:N/AC:H/Au:N/C:N/I:P/A:N
Weakness (CWE): CWE-287
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

openssl openssl openssl:openssl	0.9.8h; 0.9.8i; 0.9.8j	NVD

References

References

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
http://secunia.com/advisories/34411	vendor-advisory
http://secunia.com/advisories/34460	vendor-advisory
http://secunia.com/advisories/34666
http://secunia.com/advisories/35065
http://secunia.com/advisories/35380
http://secunia.com/advisories/35729
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.