Buffer overflow in Strukturag Libheif
CVE-2026-3950
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 b…
Vulnerability class: Buffer Overflow
EPSS: 0.000 (5.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Strukturag Libheif — versions 1.21.0, 1.21.1, 1.21.2
Weakness classification (CWE)
References
- VDB-350382 | strukturag libheif stsz/stts track.cc load out-of-bounds (technical-description, vdb-entry)
- VDB-350382 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
- Submit #766431 | strukturag libheif 1.21.2 Out-of-Bounds Read (third-party-advisory)
- cna@vuldb.com (issue-tracking)
- cna@vuldb.com (exploit)
- cna@vuldb.com (issue-tracking, patch)
- cna@vuldb.com (product)
Frequently asked questions
- What is CVE-2026-3950?
- CVE-2026-3950 is a low-severity vulnerability in Strukturag Libheif, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 3.3/10. Published 2026-03-11.
- How severe is CVE-2026-3950?
- Low severity. CVSS v3 base score is 3.3 out of 10.