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Vulnerability record · CVE-2012-5854 · published 19 November 2012

CVE-2012-5854: Flashtux weechat memory buffer overflow vulnerability

Flashtux · Weechat

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.

7.5 CVSS 2.0 High EPSS 5.5% · top 7.4% CWE-119 · Memory buffer overflow
7.5CVSS 2.0 base score
5.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
26References
16 Jun 2026Last modified by NVD

Description

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.fedoraproject.org/pipermail/package-announce/2012-November/092228.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-November/092490.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-November/092536.html
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00018.html
http://lists.opensuse.org/opensuse-updates/2012-11/msg00087.html
http://osvdb.org/87279
http://secunia.com/advisories/51377
http://weechat.org/security/ Vendor Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2013:136
http://www.openwall.com/lists/oss-security/2012/11/12/2
http://www.securityfocus.com/bid/56482
https://savannah.nongnu.org/bugs/?37704
https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0330
http://lists.fedoraproject.org/pipermail/package-announce/2012-November/092228.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-November/092490.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-November/092536.html
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00018.html
http://lists.opensuse.org/opensuse-updates/2012-11/msg00087.html
http://osvdb.org/87279
http://secunia.com/advisories/51377
http://weechat.org/security/ Vendor Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2013:136
http://www.openwall.com/lists/oss-security/2012/11/12/2
http://www.securityfocus.com/bid/56482
https://savannah.nongnu.org/bugs/?37704
https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0330

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2012-5854), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.