Vulnerability 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.
CVSS Score
LOW
Related Weaknesses (CWE)
References
- https://github.com/biniamf/pocs/tree/main/libheif_vvdec
- https://github.com/strukturag/libheif/
- https://github.com/strukturag/libheif/commit/b97c8b5f198b27f375127cd597a35f21135
- https://github.com/strukturag/libheif/issues/1712
- https://github.com/strukturag/libheif/issues/1712#issuecomment-3947938531
- https://vuldb.com/?ctiid.350381
- https://vuldb.com/?id.350381
- https://vuldb.com/?submit.765979
FAQ
What is CVE-2026-3949?
CVE-2026-3949 is a vulnerability with a CVSS score of 3.3 (LOW). 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 ...
How severe is CVE-2026-3949?
CVE-2026-3949 has been rated LOW with a CVSS base score of 3.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-3949?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.