DEBIAN-CVE-2026-3949: libheif security update

DEBIAN-CVE-2026-3949, released March 11, 2026, fixes 1 CVE in libheif (version 1.23.1-1). None of them is reported as exploited. Patch Radar priority: Routine.

Routine

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

n/a

No CVSS score published

Highest EPSS

0.0014

3rd percentile

Fixed package versions

Product	Release	Fixed in
libheif	Debian 13.5 (trixie)	1.23.1-1
libheif	Debian 14	1.23.1-1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Routine	CVE-2026-3949	libheif: A vulnerability was determined in strukturag libheif up to 1.21.2	n/a	0.0014	None reported

Also fixes CVE-2026-3949

SUSE-SU-2026:2622-1
libheif on sles 15.7
OPENSUSE-SU-2026:20974-1
libheif on opensuse-leap 16.0
SUSE-SU-2026:22153-1
libheif on sles 16.0
ALAS2023-2026-1509
heif-pixbuf-loader, heif-pixbuf-loader-debuginfo, libheif and 5 more on amzn 2023

Vendor advisory

https://security-tracker.debian.org/tracker/CVE-2026-3949

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