CVE-2026-47709
Last modified
CVE-2026-47709 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. libheif is a HEIF and AVIF file format decoder and encoder. Versions prior to 1.22.0 crashes in the public C API `heif_image_handle_get_image_tiling()` when a malformed uncompressed HEIF image item has an associated `uncC` property but no associated `ispe` property. EPSS estimates a 0.18% chance of exploitation in the next 30 days.
Description
libheif is a HEIF and AVIF file format decoder and encoder. Versions prior to 1.22.0 crashes in the public C API `heif_image_handle_get_image_tiling()` when a malformed uncompressed HEIF image item has an associated `uncC` property but no associated `ispe` property. In debug builds this trips the `ispe && uncC` assertion in `ImageItem_uncompressed::get_heif_image_tiling()`. In a release/NDEBUG ASan build, the same file causes a null pointer read at address `0xa8`. Version 1.22.0 fixes the issue.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Struktur | Libheif | < 1.22.0 |
References
- https://github.com/strukturag/libheif/issues/1802Exploit, Issue Tracking, Third Party Advisory
- https://github.com/strukturag/libheif/pull/1806Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/strukturag/libheif/security/advisories/GHSA-4h72-vqgp-9376Exploit, Vendor Advisory, Mitigation
- https://github.com/strukturag/libheif/security/advisories/GHSA-4h72-vqgp-9376Exploit, Vendor Advisory, Mitigation
Timeline
- Published
- Last Modified
- Status
- Analyzed
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