CVE-2026-49271
Last modified
CVE-2026-49271 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. libheif is a HEIF and AVIF file format decoder and encoder. Prior to version 1.22.1, the uncompressed HEIF decoder validates explicit icef compressed-unit offsets using unit_offset + unit_size. EPSS estimates a 0.20% chance of exploitation in the next 30 days.
Description
libheif is a HEIF and AVIF file format decoder and encoder. Prior to version 1.22.1, the uncompressed HEIF decoder validates explicit icef compressed-unit offsets using unit_offset + unit_size. Because the addition can wrap, a crafted HEIF file can pass the range check and then construct a vector from iterators outside the compressed item buffer, producing an out-of-bounds heap read and crash. Version 1.22.1 patches the issue.
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 | < 1.22.1 |
References
- https://github.com/strukturag/libheif/security/advisories/GHSA-r7qj-cg5r-r6vfMitigation, Vendor Advisory
- https://github.com/strukturag/libheif/security/advisories/GHSA-r7qj-cg5r-r6vfMitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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