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CVE-2026-3950

strukturag libheif stsz/stts track.cc load out-of-bounds

Published: Mar 11, 2026Updated: Apr 29, 2026 Sources: CVE List NVD BDUCWE-119
3.3LOW
NVD MITRE
EPSS Score
0.1%
Top 98.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:NI:NA:L
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
Open in CVSS calculator →

Weaknesses

CWE-119CWE-125

Affected Products

LibheifStruktur AG
LibraryLibrary
OSS Libraries / generic-library
libheifstrukturag
Library
OSS Libraries / generic-library
struktur agcommercialOSS Libraries
strukturagoss-projectOSS Librariesaka libheif, libde265, strukturag/libde265

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

MITRE ATT&CK

3 techniques
Collection
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://github.com/strukturag/libheif/issues/1715
github.com
https://github.com/Niebelungen-D/pocs/tree/main/heif_dec_sequence_chunk_idx_oob
github.com
https://github.com/strukturag/libheif/
github.com
and 5 more references View all →

Timeline

Published
Mar 11, 2026
Last Updated
Apr 29, 2026

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