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CVE-2026-3949

strukturag libheif HEIF File decoder_vvdec.cc vvdec_push_data2 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 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.

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
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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/biniamf/pocs/tree/main/libheif_vvdec
github.com
https://github.com/strukturag/libheif/
github.com
https://github.com/strukturag/libheif/commit/b97c8b5f198b27f375127cd597a35f2113544d03
github.com
and 6 more references View all →

Timeline

Published
Mar 11, 2026
Last Updated
Apr 29, 2026

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