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CVE-2026-47714

MEDIUM
6.1
CVSS 3.1
Description
libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, the inline mask parsing code in `libheif/region.cc` contains an integer overflow. Both `width` and `height` are `unsigned int` (32-bit) values parsed from the HEIF file. Their product can exceed `UINT32_MAX`, wrapping to a small value before the division by 8. This causes an undersized buffer allocation, leading to out-of-bounds memory access when the mask data is later interpreted as a `width x height` bitmap. Version 1.22.0 patches the issue.

Metadata

CVE ID
CVE-2026-47714
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-05-19 21:29 UTC
Published
2026-07-21 21:04 UTC
Last updated
2026-07-21 21:04 UTC
Primary CWE
CWE-190
CWE-190: Integer Overflow or Wraparound
Vendor / Product
strukturag / libheif
Sources
cve.org  ·  NVD

Severity & Metrics

6.1 MEDIUM CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Affected products (1)
VendorProductPlatformVersions
strukturag libheif — < 1.22.0
Weakness (CWE)
CWESourceDescription
CWE-190 cna CWE-190: Integer Overflow or Wraparound
CVSS scores (1)
ScoreSeverityVersionSourceVector
6.1 MEDIUM 3.1 cna CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
References (1)
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