CVE catalog

CVE-2026-62377

Severity: Medium · CVSS 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Published: Aug 1, 2026, 12:00:00 AM UTC
Updated: Aug 18, 2026, 10:17:03 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.41% · Oct 25, 2026

libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.0 and earlier, a crafted HEIF sequence accepted by heif_context_read_from_memory() can leave the context with no registered sequence tracks and crash when heif_context_get_track(ctx, 0) is called. HeifContext::get_track() in libheif/context.cc executes assert(has_sequence()) before its normal error handling, so assert-enabled builds abort instead of allowing the public wrapper in libheif/api/libheif/heif_sequences.cc to return null. In release builds, removing the assertion lets the track_id zero path dereference m_tracks.begin()->second on an empty map, which is undefined behavior and typically crashes. The issue is reachable through documented public APIs after parsing attacker-controlled bytes. This issue is fixed in version 1.23.1.

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
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`	vulnerable
Ubuntu	libheif	26.04	`1.21.2-3ubuntu0.2`	vulnerable
Ubuntu	libheif	26.04	`1.21.2-3ubuntu0.3`	vulnerable
Ubuntu	libheif	26.04	`1.21.2-3ubuntu0.4`	vulnerable
Ubuntu	libheif	26.04	`1.21.2-3ubuntu0.5`	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	Not reported
Debian	libheif	source	forky	`1.23.1-1`	not yet assigned	Not reported	Not reported
Debian	libheif	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	libheif	source	bookworm	`Not affected`	unimportant	Not reported	Not reported
Ubuntu	libheif	deb	26.04	`1.21.2-3ubuntu0.5`	Not reported	UBUNTU-CVE-2026-62377	Not reported

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, 7:10:45 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]