Dashboard / CVE-2026-47254

CVE-2026-47254

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 37/100
Published: 2026-07-21 Modified: 2026-10-24 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Auth

CVSS Vector Breakdown

AV: Local
AC: Low
PR: None
UI: Required
S: Unchanged
C: Low
I: None
A: High

Description

libheif is a HEIF and AVIF file format decoder and encoder. Prior to version 1.22.0, `Track::init_sample_timing_table()` in `libheif/sequences/track.cc` stores an out-of-bounds chunk index (`m_chunks.size()`) into `m_presentation_timeline` when the number of chunks defined in the `stco` box is less than the number of samples in `stsz`. A subsequent call to `heif_track_get_next_raw_sequence_sample()` reads `m_chunks[chunk_idx]` with that OOB index, causing a heap-buffer-overflow. Version 1.22.0 fixes the issue.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
struktur libheif < 1.22.0

References & Advisories (1)

Bug Bounty Relevance

37 / 100
✓ No authentication
✓ Low complexity

CVSS Score

6.1 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

EPSS — Exploitation Probability

0.16%
Raw Score 0.001610
Percentile 5.3%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00161
2026-10-28
0.00161

Intelligence Sources

nvd ref →

External Links