4.8
Medium
CVE-2026-3949 A vulnerability was determined in strukturag libheif up to 1.21.2
Description
A vulnerability was determined in strukturag libheif up to 1.21.2. This affects the function vvdec_push_data2 of the file libheif/plugins/decoder_vvdec.cc of the component HEIF File Parser. Executing a manipulation of the argument size can lead to out-of-bounds read. The attack needs to be launched locally. The exploit has been publicly disclosed and may be utilized. This patch is called b97c8b5f198b27f375127cd597a35f2113544d03. It is advisable to implement a patch to correct this issue.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| libheif 1.21 | 1.21.0 → 1.21.2 | No fix stated |
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