Veille CVE
CVE-2026-32740
8.8 ÉlevéeDescription
libheif is a HEIF and AVIF file format decoder and encoder. Versions 1.21.2 and prior contain a heap-buffer-overflow (write) vulnerability in the grid tile compositing, allowing an attacker to write 64 bytes of fully attacker-controlled data past the end of a chroma plane heap allocation by crafting a HEIF/AVIF file with a 1×4 grid of odd-height tiles. The overflow is triggered during normal image decoding with default build configuration. The written bytes are chroma (Cb/Cr) pixel values from the attacking tile, giving the attacker full control over the overflow content. This issue has been fixed in version 1.22.0.
Produits concernés
Scores CVSS
| Version | Score | Source | Vecteur |
|---|---|---|---|
| 3.1 | 8.8 Élevée | security-advisories@github.com | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| 3.1 | 8.8 Élevée | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Faiblesses (CWE)
Références
- https://github.com/strukturag/libheif/releases/tag/v1.22.0 Release Notes
- https://github.com/strukturag/libheif/security/advisories/GHSA-frfr-f3vg-2g6j ExploitVendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-32740
- https://bugzilla.redhat.com/show_bug.cgi?id=2479969
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32740.json