CVE-2026-3949
A vulnerability was determined in strukturag libheif up to 1.21.2.
Does this matter?
Lower severity and a low EPSS score (0.12%). Track it; it rarely justifies an emergency change on its own.
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 4.0
- 1.9 LOWCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.12% probability · 2th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119, CWE-125
- Source
- cna@vuldb.com
References
- https://github.com/biniamf/pocs/tree/main/libheif_vvdec
- https://github.com/strukturag/libheif/
- https://github.com/strukturag/libheif/commit/b97c8b5f198b27f375127cd597a35f2113544d03
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.