CVE-2026-3950
strukturag libheif stsz/stts track.cc load out-of-bounds
- State
- Published
- Severity
- 4.8 Medium
- Published
- Mar 11, 2026
- Updated
- Mar 11, 2026
- Reserved
- Mar 11, 2026
Description
A vulnerability was identified in strukturag libheif up to 1.21.2. This impacts the function Track::load of the file libheif/sequences/track.cc of the component stsz/stts. The manipulation leads to out-of-bounds read. The attack needs to be performed locally. The exploit is publicly available and might be used. Applying a patch is the recommended action to fix this issue. The patch available is inofficial and not approved yet.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.8 Medium | CVSS: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 | VulDB |
| 3.1 | 3.3 Low | 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 | VulDB |
| 3.0 | 3.3 Low | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C | VulDB |
| 2.0 | 1.7 Low | AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
libheifstrukturag |
|
References
- VDB-350382 | strukturag libheif stsz/stts track.cc load out-of-boundsvdb-entrytechnical-description
- VDB-350382 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- Submit #766431 | strukturag libheif 1.21.2 Out-of-Bounds Readthird-party-advisory
- https://github.com/strukturag/libheif/issues/1715issue-tracking
- https://github.com/Niebelungen-D/pocs/tree/main/heif_dec_sequence_chunk_idx_oobexploit
- https://github.com/strukturag/libheif/pull/1721issue-trackingpatch
- https://github.com/strukturag/libheif/product
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.