CVE-2026-47714
Last modified
CVE-2026-47714 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, the inline mask parsing code in `libheif/region.cc` contains an integer overflow. EPSS estimates a 0.11% 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, the inline mask parsing code in `libheif/region.cc` contains an integer overflow. Both `width` and `height` are `unsigned int` (32-bit) values parsed from the HEIF file. Their product can exceed `UINT32_MAX`, wrapping to a small value before the division by 8. This causes an undersized buffer allocation, leading to out-of-bounds memory access when the mask data is later interpreted as a `width x height` bitmap. Version 1.22.0 patches the issue.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Struktur | Libheif | < 1.22.0 |
References
- https://github.com/strukturag/libheif/security/advisories/GHSA-h4wm-6wwf-qvhxMitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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