CVE-2012-5854

Heap-based buffer overflow in WeeChat 0.3.6 through 0.3.9 allows remote attackers to cause a denial of service (crash or hang) and possibly execute arbitrary code via crafted IRC colors that are not properly decoded.

Published: 2012-11-19 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-5854 is rated Moderate Risk (60.1/100): CVSS High severity, with high exploitation likelihood (EPSS 6.61%, 90th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2012-5854

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 8.09% 6.61% -1.47%
2 2025-03-29 6.61% 8.09% +1.47%
3 2025-03-17 — 6.61% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-5854

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2012-5854

OS Trackers for CVE-2012-5854

vendor priority summary link
debian not yet assigned CVE-2012-5854 not yet assigned priority: Debian including 1 source packages (weechat), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2012-5854
gentoo normal CVE-2012-5854: 1 GLSA(s) (201405-03), 1 atom(s) (net-irc/weechat); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2012-5854
ubuntu medium CVE-2012-5854 medium priority: Ubuntu including 1 source packages (weechat), 15 status rows across 15 suites (hardy, lucid, oneiric, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): not-affected 8, ignored 5, DNE 1, released 1. https://ubuntu.com/security/CVE-2012-5854

Affected software / configurations for CVE-2012-5854

Vendor Product Version Raw CPE
flashtux weechat 0.3.6 cpe:2.3:a:flashtux:weechat:0.3.6:*:*:*:*:*:*:*
flashtux weechat 0.3.7 cpe:2.3:a:flashtux:weechat:0.3.7:*:*:*:*:*:*:*
flashtux weechat 0.3.8 cpe:2.3:a:flashtux:weechat:0.3.8:*:*:*:*:*:*:*
flashtux weechat 0.3.9 cpe:2.3:a:flashtux:weechat:0.3.9:*:*:*:*:*:*:*

References for CVE-2012-5854

cvelogic Threat Intelligence