CVE-2026-3949CWE-119CWE-125

strukturag libheif HEIF File decoder_vvdec.cc vvdec_push_data2 out-of-bounds

Medium · published March 11, 2026

CVSS v4.0
4.8
EPSS
0%
Percentile
5.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
4.8 · MEDIUM
Vector
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
EPSS
0.00166 · 5.5th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-125 · Out-of-bounds Read
Published
2026-03-11T18:32Z
EPSS history
Timeline
  • 11 MAR 18:32Z
    strukturag libheif HEIF File decoder_vvdec.cc vvdec_push_data2 out-of-bounds
    cvelistv5