CVE-2011-5129

mediumpriority · track · 33EPSS 0.077 · 95 %ileexploit · functionalEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · functional

Likely / severe?

7.70% (95th) EPSS

CVSS 5 · medium

Is it mine?

52 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

5.0

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v2.04.5mediumAV:N/AC:L/Au:N/C:N/I:N/A:P/E:POCsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USprimary

exploits (1)

Public proof-of-concept and weaponised exploit code.

EDB-18159XChat 2.8.9 - Heap Overflow Denial of Servicefunctional · exploit_db

affected products (52)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
xchat xchat≤ 2.8.9nvdUScpe:2.3:a:xchat:xchat:*:*:*:*:*:*:*:*
xchat xchat= 1.2.1nvdUScpe:2.3:a:xchat:xchat:*:*:*:*:*:*:*:*
xchat xchat= 1.3.10nvdUScpe:2.3:a:xchat:xchat:*:*:*:*:*:*:*:*
xchat xchat= 1.3.11nvdUScpe:2.3:a:xchat:xchat:*:*:*:*:*:*:*:*
xchat xchat= 1.3.12nvdUScpe:2.3:a:xchat:xchat:*:*:*:*:*:*:*:*
xchat xchat= 1.3.13nvdUScpe:2.3:a:xchat:xchat:*:*:*:*:*:*:*:*
xchat xchat= 1.3.9nvdUScpe:2.3:a:xchat:xchat:*:*:*:*:*:*:*:*
xchat xchat= 1.4nvdUScpe:2.3:a:xchat:xchat:*:*:*:*:*:*:*:*
xchat xchat= 1.4.1nvdUScpe:2.3:a:xchat:xchat:*:*:*:*:*:*:*:*
xchat xchat= 1.4.2nvdUScpe:2.3:a:xchat:xchat:*:*:*:*:*:*:*:*
xchat xchat= 1.4.3nvdUScpe:2.3:a:xchat:xchat:*:*:*:*:*:*:*:*
xchat xchat= 1.5.6nvdUScpe:2.3:a:xchat:xchat:*:*:*:*:*:*:*:*
xchat xchat= 1.8.0nvdUScpe:2.3:a:xchat:xchat:*:*:*:*:*:*:*:*
xchat xchat= 1.8.1nvdUScpe:2.3:a:xchat:xchat:*:*:*:*:*:*:*:*
xchat xchat= 1.8.2nvdUScpe:2.3:a:xchat:xchat:*:*:*:*:*:*:*:*
xchat xchat= 1.8.3nvdUScpe:2.3:a:xchat:xchat:*:*:*:*:*:*:*:*
xchat xchat= 1.8.4nvdUScpe:2.3:a:xchat:xchat:*:*:*:*:*:*:*:*
xchat xchat= 1.8.5nvdUScpe:2.3:a:xchat:xchat:*:*:*:*:*:*:*:*
xchat xchat= 1.8.6nvdUScpe:2.3:a:xchat:xchat:*:*:*:*:*:*:*:*

showing 20 of 52

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2012-08-30modified 2026-06-16

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+21023 more

references (14)

External citations — patches, advisories, analysis.

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