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CVE-2012-5642

26
FAUCET Score

CVE-2012-5642 describes a vulnerability in Fail2ban versions prior to 0.8.8, where improper handling of the 'matches' tag content in server/action.py could allow remote attackers to trigger unsafe behavior in custom action files. This flaw carries a CVSS score of 7.5, indicating high severity with potential for partial confidentiality, integrity, and availability impact through a low-complexity network attack. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.8.7.1CPE matchmatch criteria
cpe:2.3:a:fail2ban:fail2ban:*:*:*:*:*:*:*:*
0.1.0CPE matchmatch criteria
cpe:2.3:a:fail2ban:fail2ban:0.1.0:*:*:*:*:*:*:*
0.1.1CPE matchmatch criteria
cpe:2.3:a:fail2ban:fail2ban:0.1.1:*:*:*:*:*:*:*
0.1.2CPE matchmatch criteria
cpe:2.3:a:fail2ban:fail2ban:0.1.2:*:*:*:*:*:*:*
0.3.0CPE matchmatch criteria
cpe:2.3:a:fail2ban:fail2ban:0.3.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.12%
Probability of exploitation in next 30 days
EPSS Percentile
86.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0312 is in the 76th percentile among its peer group of 51,466 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

lists.opensuse.org / opensuse-updates/2013-04/msg00001.html
lists.opensuse.org / opensuse-updates/2013-04/msg00002.html
bugs.gentoo.org / show_bug.cgi
bugzilla.redhat.com / show_bug.cgi
github.com / fail2ban/fail2ban/commit/83109bc
PatchVendor Advisory
sourceforge.net / mailarchive/message.php
raw.github.com / fail2ban/fail2ban/master/ChangeLog
mandriva.com / security/advisories
openwall.com / lists/oss-security/2012/12/17/2