Out-of-bounds Read in GNOME Gdk-Pixbuf
CVE-2026-16768
A flaw was found in gdk-pixbuf. When parsing a specially crafted ICO file with pixel values that exceed the defined palette range, an out-of-bounds read can occur due to improper bounds checking against the actual palette size. This vulnerability causes heap bytes to be interpreted as valid palette indices and rendered as RGB pixel values in the output image, allowing an attacker to extract heap content via the generated output, such as a thumbnail.
Vulnerability class: Buffer Overflow
EPSS: 0.002 (14.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
Affected products
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking)
- secalert@redhat.com
Frequently asked questions
- What is CVE-2026-16768?
- CVE-2026-16768 is a medium-severity vulnerability in GNOME Gdk-Pixbuf, classified under Out-of-bounds Read. CVSS score: 5.3/10. Published 2026-07-23.
- How severe is CVE-2026-16768?
- Medium severity. CVSS v3 base score is 5.3 out of 10.