CVE catalog

CVE-2026-3950

Severity: Medium · CVSS 4.8
Published: Mar 11, 2026, 7:02:08 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.14% · Oct 25, 2026

A vulnerability was identified in strukturag libheif up to 1.21.2. This impacts the function Track::load of the file libheif/sequences/track.cc of the component stsz/stts. The manipulation leads to out-of-bounds read. The attack needs to be performed locally. The exploit is publicly available and might be used. Applying a patch is the recommended action to fix this issue. The patch available is inofficial and not approved yet.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	libheif	sid	`1.23.6-2`	fixed
Debian	libheif	forky	`1.23.6-2`	fixed
Debian	libheif	trixie	`1.19.8-1+deb13u1`	not affected
Debian	libheif	trixie-security	`1.23.6-2~deb13u1`	not affected
Debian	libheif	bookworm	`1.15.1-1+deb12u1`	not affected
Debian	libheif	bookworm-security	`1.15.1-1+deb12u1`	not affected
Cpe	libheif	Not reported	Not reported	not affected
Cpe	libheif	Not reported	`1.17.6-1ubuntu4.4`	fixed
Cpe	heif-gdk-pixbuf	Not reported	`1.17.6-1ubuntu4.4`	fixed
Cpe	heif-thumbnailer	Not reported	`1.17.6-1ubuntu4.4`	fixed
Cpe	libheif-dev	Not reported	`1.17.6-1ubuntu4.4`	fixed
Cpe	libheif-examples	Not reported	`1.17.6-1ubuntu4.4`	fixed
Cpe	libheif-plugin-aomdec	Not reported	`1.17.6-1ubuntu4.4`	fixed
Cpe	libheif-plugin-aomenc	Not reported	`1.17.6-1ubuntu4.4`	fixed
Cpe	libheif-plugin-dav1d	Not reported	`1.17.6-1ubuntu4.4`	fixed
Cpe	libheif-plugin-ffmpegdec	Not reported	`1.17.6-1ubuntu4.4`	fixed
Cpe	libheif-plugin-j2kdec	Not reported	`1.17.6-1ubuntu4.4`	fixed
Cpe	libheif-plugin-j2kenc	Not reported	`1.17.6-1ubuntu4.4`	fixed
Cpe	libheif-plugin-jpegdec	Not reported	`1.17.6-1ubuntu4.4`	fixed
Cpe	libheif-plugin-jpegenc	Not reported	`1.17.6-1ubuntu4.4`	fixed
Cpe	libheif-plugin-libde265	Not reported	`1.17.6-1ubuntu4.4`	fixed
Cpe	libheif-plugin-rav1e	Not reported	`1.17.6-1ubuntu4.4`	fixed
Cpe	libheif-plugin-svtenc	Not reported	`1.17.6-1ubuntu4.4`	fixed
Cpe	libheif-plugin-x265	Not reported	`1.17.6-1ubuntu4.4`	fixed
Cpe	libheif1	Not reported	`1.17.6-1ubuntu4.4`	fixed
Ubuntu	libheif	25.10	`1.19.7-1`	vulnerable
Ubuntu	libheif	25.10	`1.19.8-1`	vulnerable
Ubuntu	libheif	25.10	`1.20.2-1`	vulnerable
Ubuntu	libheif	25.10	`1.20.2-1ubuntu0.1`	vulnerable
Ubuntu	libheif	25.10	`1.20.2-1ubuntu0.3`	vulnerable
Ubuntu	libheif	25.10	`1.20.2-1ubuntu0.4`	fixed
Ubuntu	libheif	26.04	`1.20.2-1`	vulnerable
Ubuntu	libheif	26.04	`1.20.2-2`	vulnerable
Ubuntu	libheif	26.04	`1.20.2-2build1`	vulnerable
Ubuntu	libheif	26.04	`1.20.2-2build2`	vulnerable
Ubuntu	libheif	26.04	`1.20.2-2ubuntu1`	vulnerable
Ubuntu	libheif	26.04	`1.21.2-1`	vulnerable
Ubuntu	libheif	26.04	`1.21.2-3`	vulnerable
Ubuntu	libheif	26.04	`1.21.2-3ubuntu0.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	libheif	source	sid	`1.23.1-1`	not yet assigned	Not reported	[1130640]
Debian	libheif	source	forky	`1.23.1-1`	not yet assigned	Not reported	[1130640]
Debian	libheif	source	trixie	`Not affected`	unimportant	Not reported	[1130640]
Debian	libheif	source	bookworm	`Not affected`	unimportant	Not reported	[1130640]
Cpe	libheif	cpe	Not reported	`1.17.6-1ubuntu4.4`	Not reported	Not reported	Not reported
Cpe	heif-gdk-pixbuf	cpe	Not reported	`1.17.6-1ubuntu4.4`	Not reported	Not reported	Not reported
Cpe	heif-thumbnailer	cpe	Not reported	`1.17.6-1ubuntu4.4`	Not reported	Not reported	Not reported
Cpe	libheif-dev	cpe	Not reported	`1.17.6-1ubuntu4.4`	Not reported	Not reported	Not reported
Cpe	libheif-examples	cpe	Not reported	`1.17.6-1ubuntu4.4`	Not reported	Not reported	Not reported
Cpe	libheif-plugin-aomdec	cpe	Not reported	`1.17.6-1ubuntu4.4`	Not reported	Not reported	Not reported
Cpe	libheif-plugin-aomenc	cpe	Not reported	`1.17.6-1ubuntu4.4`	Not reported	Not reported	Not reported
Cpe	libheif-plugin-dav1d	cpe	Not reported	`1.17.6-1ubuntu4.4`	Not reported	Not reported	Not reported
Cpe	libheif-plugin-ffmpegdec	cpe	Not reported	`1.17.6-1ubuntu4.4`	Not reported	Not reported	Not reported
Cpe	libheif-plugin-j2kdec	cpe	Not reported	`1.17.6-1ubuntu4.4`	Not reported	Not reported	Not reported
Cpe	libheif-plugin-j2kenc	cpe	Not reported	`1.17.6-1ubuntu4.4`	Not reported	Not reported	Not reported
Cpe	libheif-plugin-jpegdec	cpe	Not reported	`1.17.6-1ubuntu4.4`	Not reported	Not reported	Not reported
Cpe	libheif-plugin-jpegenc	cpe	Not reported	`1.17.6-1ubuntu4.4`	Not reported	Not reported	Not reported
Cpe	libheif-plugin-libde265	cpe	Not reported	`1.17.6-1ubuntu4.4`	Not reported	Not reported	Not reported
Cpe	libheif-plugin-rav1e	cpe	Not reported	`1.17.6-1ubuntu4.4`	Not reported	Not reported	Not reported
Cpe	libheif-plugin-svtenc	cpe	Not reported	`1.17.6-1ubuntu4.4`	Not reported	Not reported	Not reported
Cpe	libheif-plugin-x265	cpe	Not reported	`1.17.6-1ubuntu4.4`	Not reported	Not reported	Not reported
Cpe	libheif1	cpe	Not reported	`1.17.6-1ubuntu4.4`	Not reported	Not reported	Not reported
Ubuntu	libheif	deb	25.10	`1.20.2-1ubuntu0.4`	Not reported	UBUNTU-CVE-2026-3950	Not reported
Ubuntu	libheif	deb	26.04	`1.21.2-3ubuntu0.1`	Not reported	UBUNTU-CVE-2026-3950	Not reported

[Debian bug #1130640]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[heif-gdk-pixbuf]Not affected
Source package: [libheif]
Details (6)
- 1.15.1-1+deb12u1 · amd64 · bookworm
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · arm64 · bookworm
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · amd64 · bookworm-security
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · arm64 · bookworm-security
  Not affected
  nvd · libheif · debian · bookworm
[heif-thumbnailer]Not affected
Source package: [libheif]
Details (6)
- 1.15.1-1+deb12u1 · amd64 · bookworm
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · arm64 · bookworm
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · amd64 · bookworm-security
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · arm64 · bookworm-security
  Not affected
  nvd · libheif · debian · bookworm
[libheif1]Not affected
Source package: [libheif]
Details (6)
- 1.15.1-1+deb12u1 · amd64 · bookworm
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · arm64 · bookworm
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · amd64 · bookworm-security
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · arm64 · bookworm-security
  Not affected
  nvd · libheif · debian · bookworm
[libheif-dev]Not affected
Source package: [libheif]
Details (6)
- 1.15.1-1+deb12u1 · amd64 · bookworm
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · arm64 · bookworm
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · amd64 · bookworm-security
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · arm64 · bookworm-security
  Not affected
  nvd · libheif · debian · bookworm
[libheif-examples]Not affected
Source package: [libheif]
Details (6)
- 1.15.1-1+deb12u1 · amd64 · bookworm
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · arm64 · bookworm
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · amd64 · bookworm-security
  Not affected
  nvd · libheif · debian · bookworm
- 1.15.1-1+deb12u1 · arm64 · bookworm-security
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-aomdec]Not affected
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-aomenc]Not affected
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-dav1d]Not affected
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-ffmpegdec]Not affected
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-j2kdec]Not affected
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-j2kenc]Not affected
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-jpegdec]Not affected
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-jpegenc]Not affected
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-libde265]Not affected
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-rav1e]Not affected
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugins-all]Not affected
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-svtenc]Not affected
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
[libheif-plugin-x265]Not affected
Source package: [libheif]
Details (2)
- 1.19.7-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm
- 1.19.7-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · libheif · debian · bookworm

Observed: Oct 27, 2026, 9:30:09 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]