CVE-2026-3949
strukturag libheif HEIF File decoder_vvdec.cc vvdec_push_data2 out-of-bounds
CVSS Score
3.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-125 CWE-119 |
| Vendor | strukturag |
| Product | libheif |
| Published | Mar 11, 2026 |
| Last Updated | Mar 11, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
strukturag / libheif
1.21.0 1.21.1 1.21.2
References
vuldb.com: https://vuldb.com/?id.350381 vuldb.com: https://vuldb.com/?ctiid.350381 vuldb.com: https://vuldb.com/?submit.765979 github.com: https://github.com/strukturag/libheif/issues/1712 github.com: https://github.com/strukturag/libheif/issues/1712#issuecomment-3947938531 github.com: https://github.com/biniamf/pocs/tree/main/libheif_vvdec github.com: https://github.com/strukturag/libheif/commit/b97c8b5f198b27f375127cd597a35f2113544d03 github.com: https://github.com/strukturag/libheif/
Credits
🔍 biniam (VulDB User)