CVE-2026-41069
Last modified
CVE-2026-41069 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, a malformed HEIF sequence file can trigger an out-of-bounds read in core sequence parsing logic, causing DoS. EPSS estimates a 0.25% chance of exploitation in the next 30 days.
Description
libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, a malformed HEIF sequence file can trigger an out-of-bounds read in core sequence parsing logic, causing DoS. A malformed file can have stco.entry_count == 0 (creating no chunks) while still passing validation because saio.entry_count == 0 matches, but with saiz.sample_count > 0 the SampleAuxInfoReader constructor still enters its loop. This leads to an out-of-bounds dereference on the empty chunks[0] in chunked mode.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Struktur | Libheif | < 1.22.0 |
References
- https://github.com/strukturag/libheif/releases/tag/v1.22.0Product, Release Notes
- https://github.com/strukturag/libheif/security/advisories/GHSA-p82x-fpmv-576rExploit, Vendor Advisory
- https://github.com/strukturag/libheif/security/advisories/GHSA-p82x-fpmv-576rExploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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