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CVE-2009-0591

14
FAUCET Score

CVE-2009-0591 describes a vulnerability in the CMS_verify function of OpenSSL versions 0.9.8h through 0.9.8j, where improper handling of errors in malformed signed attributes allows remote attackers to repudiate a signature that initially appeared valid. This vulnerability has a low CVSS score of 2.6, indicating a network-based attack with high access complexity and a potential impact of partial integrity loss. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
0.9.8hCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.8h:*:*:*:*:*:*:*
0.9.8iCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.8i:*:*:*:*:*:*:*
0.9.8jCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:0.9.8j:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

2.6LOW

AV:N/AC:H/Au:N/C:N/I:P/A:N

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Exploitability Score
4.9
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.73%
Probability of exploitation in next 30 days
EPSS Percentile
84.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0273 is in the 82nd percentile among its peer group of 1,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.3 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2009-0591Moderate

openssl: incorrect error checking during CMS verification

Mar 25, 2009

References

ftp.netbsd.org / pub/NetBSD/security/advisories/NetBSD-SA2009-008.txt.asc
lists.apple.com / archives/security-announce/2009/Sep/msg00004.html
lists.opensuse.org / opensuse-security-announce/2009-05/msg00000.html
marc.info
marc.info
secunia.com / advisories/34411
Vendor Advisory
secunia.com / advisories/34460
Vendor Advisory
secunia.com / advisories/34666
secunia.com / advisories/35065
secunia.com / advisories/35380
secunia.com / advisories/35729
secunia.com / advisories/36701
secunia.com / advisories/42724
secunia.com / advisories/42733
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/49432
kb.bluecoat.com / index
sourceforge.net / project/shownotes.php
support.apple.com / kb/HT3865
voodoo-circle.sourceforge.net / sa/sa-20090326-01.html
Vendor Advisory
openssl.org / news/secadv_20090325.txt
Vendor Advisory
osvdb.org / 52865
php.net / archive/2009.php
securityfocus.com / bid/34256
vupen.com / english/advisories/2009/0850
Vendor Advisory
vupen.com / english/advisories/2009/1020
vupen.com / english/advisories/2009/1175
vupen.com / english/advisories/2009/1548