PatchSiren cyber security CVE debrief
CVE-2026-48029 strukturag CVE debrief
libheif is a HEIF and AVIF file format decoder and encoder. Versions 1.19.0 through 1.21.2 have a heap OOB read in ImageItem_Grid::decode_grid_tile via irot-induced tile-coordinate underflow. Version 1.22.0 fixes the issue. This vulnerability affects users of libheif 1.19.0 through 1.21.2, who should update to version 1.22.0 to address the heap OOB read vulnerability. The vulnerability has been addressed, and users are advised to review their installations and update as necessary.
- Vendor
- strukturag
- Product
- libheif
- CVSS
- HIGH 7.1
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-07-22
- Original CVE updated
- 2026-07-22
- Advisory published
- 2026-07-22
- Advisory updated
- 2026-07-22
Who should care
Users of libheif 1.19.0 through 1.21.2 should update to version 1.22.0 to address the heap OOB read vulnerability. This includes operators, platform administrators, vulnerability management teams, and security teams who manage or use libheif in their environments. Reviewing the official advisory and CVE record can help validate affected scope, severity, and vendor guidance.
Technical summary
The libheif library, used for decoding and encoding HEIF and AVIF file formats, contains a heap out-of-bounds (OOB) read vulnerability. This issue, tracked as CVE-2026-48029, affects versions 1.19.0 through 1.21.2. The vulnerability is specifically located in the ImageItem_Grid::decode_grid_tile function, where an irot-induced tile-coordinate underflow can lead to a heap OOB read. This type of vulnerability can potentially allow attackers to read sensitive data from the heap, which could lead to information disclosure or other security issues. The vulnerability has been addressed in version 1.22.0 of libheif.
Defensive priority
High
Recommended defensive actions
- Update libheif to version 1.22.0 or later
- Inventory and patch vulnerable installations of libheif versions 1.19.0 through 1.21.2
- Monitor for suspicious activity related to libheif usage
- Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
- Review compensating controls for exposed systems while remediation is scheduled and verified
- Check relevant monitoring, detection, and logs for exposed assets that need extra review
- Track exceptions, retest remediated assets, and close the item only after evidence is documented
Evidence notes
The CVE record was published on 2026-07-22T15:17:18.357Z and was last modified on 2026-07-22T20:38:42.127Z. The NVD entry is currently Awaiting Analysis. There is limited information available about the specific details of the vulnerability. Further verification and analysis are required to understand the full scope and impact of CVE-2026-48029. Users should review the official CVE record and NVD details for the most current information.
Official resources
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-22T15:17:18.357Z and has not been modified since then. The NVD entry is currently Awaiting Analysis.