CVE-2026-3949

EUVD-2026-11300

11.03.2026, 19:16

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	3.3 LOW	LOCAL	LOW	LOW	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
VulDB	CNA	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

Awaiting analysis

This vulnerability is currently awaiting analysis.

Base Score

CVSS 3.x

EPSS Score

Percentile: Unknown

Ubuntu Releases

Ubuntu Product

Codename

libheif

bionic	needs-triage
focal	needs-triage
jammy	needs-triage
noble	needs-triage
questing	needs-triage

Common Weakness Enumeration

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.

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