CVE-2026-49271 (GCVE-0-2026-49271)

Vulnerability from cvelistv5 – Published: 2026-06-19 17:16 – Updated: 2026-06-22 17:05
VLAI
Title
libheif: Wrapped icef compressed-unit range check causes out-of-bounds read in uncompressed HEIF decoder
Summary
libheif is a HEIF and AVIF file format decoder and encoder. Prior to version 1.22.1, the uncompressed HEIF decoder validates explicit icef compressed-unit offsets using unit_offset + unit_size. Because the addition can wrap, a crafted HEIF file can pass the range check and then construct a vector from iterators outside the compressed item buffer, producing an out-of-bounds heap read and crash. Version 1.22.1 patches the issue.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-22 17:01 UTC
CWE
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 8035 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
strukturag libheif Affected: < 1.22.1
guessed Create a notification for this product.
Show details on NVD website
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