What is CVE-2012-0828?

CVE-2012-0828 is a critical-severity vulnerability in GNOME Gtk, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2020-02-21.

How severe is CVE-2012-0828?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in GNOME Gtk

CVE-2012-0828

Heap-based buffer overflow in Xchat-WDK before 1499-4 (2012-01-18) xchat 2.8.6 on Maemo architecture could allow remote attackers to cause a denial of service (xchat client crash) or execute arbitrary code via a UTF-8 line from server containing characters outside of the Basic Multilingual Plane (BMP).

Vulnerability class: Buffer Overflow

Published 2020-02-21 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.043 (90.8th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.043 · newest: 0.043 · change: 0.000

Affected products

GNOME Gtk — versions 2.10.4, 2.14.7, 2.18.9
Xchat — versions 2.8.6 on Maemo architecture
Xchat Xchat-Wdk — versions before 1499-4 (2012-01-18)
Xchat-Wdk

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

security-tracker.debian.org/tracker/CVE-2012-0828 (Third Party Advisory)
bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
access.redhat.com/security/cve/cve-2012-0828 (Third Party Advisory)
www.openwall.com/lists/oss-security/2012/02/01/9 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2012-0828?: CVE-2012-0828 is a critical-severity vulnerability in GNOME Gtk, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2020-02-21.
How severe is CVE-2012-0828?: Critical severity. CVSS v3 base score is 9.8 out of 10.