CVE-2026-41069
mediumpriority · track · 0EPSS 0.003 · 17 %ileEURUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (10)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (7)
External citations — patches, advisories, analysis.
- https://github.com/strukturag/libheif/releasesPatchcnnvd
- https://github.com/strukturag/libheif/releases/tag/v1.22.0cnnvd
- https://github.com/strukturag/libheif/security/advisories/GHSA-p82x-fpmv-576rcnnvd
- https://github.com/strukturag/libheif/releases/tag/v1.22.0enisa_euvd
- https://github.com/strukturag/libheif/security/advisories/GHSA-p82x-fpmv-576renisa_euvd
- https://github.com/strukturag/libheif/releases/tag/v1.22.0ProductRelease Notesnvd
- https://github.com/strukturag/libheif/security/advisories/GHSA-p82x-fpmv-576rExploitVendor Advisorynvd
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