CVE-2012-5854

CVE-2012-5854 is a high-severity vulnerability in Flashtux Weechat with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

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.

Frequently asked questions

What is 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.
How severe is CVE-2012-5854?
CVE-2012-5854 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2012-5854 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-5854?
CVE-2012-5854 primarily affects Flashtux Weechat. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-5854?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2012-5854 published?
CVE-2012-5854 was published on 2012-11-19 and last updated on 2026-06-16.

References

Affected products (4)

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