CVE-2011-5129

CVE-2011-5129 is a medium-severity vulnerability in Xchat with a CVSS 2.0 base score of 5.0. 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 XChat 2.8.9 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long response string.

Frequently asked questions

What is CVE-2011-5129?
Heap-based buffer overflow in XChat 2.8.9 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long response string.
How severe is CVE-2011-5129?
CVE-2011-5129 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2011-5129 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-5129?
CVE-2011-5129 primarily affects Xchat. In total, 59 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-5129?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-5129 published?
CVE-2011-5129 was published on 2012-08-30 and last updated on 2026-06-16.

References

Affected products (59)

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