Heap OOB Read Vulnerability in libheif Affects ImageDecoding
CVE-2026-48029

7.1HIGH

Key Information:

Vendor

Strukturag

Status
Libheif
Vendor
CVE Published:
22 July 2026

What is CVE-2026-48029?

The libheif library, used for decoding and encoding HEIF and AVIF file formats, has been found to contain a heap out-of-bounds read vulnerability. This issue arises in versions 1.19.0 through 1.21.2, specifically within the ImageItem_Grid::decode_grid_tile function due to tile-coordinate underflow when using the irot decoding technique. Version 1.22.0 addresses the vulnerability, mitigating potential risks associated with image processing.

Affected Version(s)

libheif >= 1.19.0, < 1.22.0

References

https://github.com/strukturag/libheif/security/advisories...
x_refsource_CONFIRM
https://github.com/strukturag/libheif/commit/e523ec0bf379...
x_refsource_MISC

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.