CVE-2026-62289 strukturag CVE debrief

Who should care

Developers and administrators of applications using libheif for HEIF and AVIF file handling should assess exposure and prioritize updating to version 1.23.1 or later. This includes reviewing the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. They should also plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.

Why it matters

CVE-2026-62289 is a denial of service vulnerability in libheif versions 1.23.0 and earlier. Developers and administrators should assess exposure and prioritize updating to version 1.23.1 or later.

• Potential denial of service via crafted HEIF or AVIF files.
• Verification of libheif version and exposure to potential attacks.

Technical summary

libheif versions 1.23.0 and earlier contain a vulnerability where a crafted HEIF or AVIF file can cause a denial of service when heif_image_handle_get_image_tiling is called. The vulnerability affects image processing and can lead to potential denial of service via crafted files. The issue is fixed in version 1.23.1. Developers and administrators should assess exposure and prioritize updating to version 1.23.1 or later. The affected implementation spans libheif/image-items/image_item.cc, libheif/context.cc, and libheif/box.cc.

Defensive priority

Assess exposure of libheif-based applications to potential denial of service via crafted HEIF or AVIF files.

Recommended defensive actions

• Inventory libheif-based applications and assess exposure to potential denial of service via crafted HEIF or AVIF files.
• Verify if applications using libheif have updated to version 1.23.1 or later.
• Implement input validation and sanitization for HEIF and AVIF files to prevent denial of service attacks.
• 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.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record and NVD entry provide details on a denial of service vulnerability in libheif versions 1.23.0 and earlier. The vulnerability is caused by a crafted HEIF or AVIF file that can reduce an image dimension to zero and crash or corrupt tiling results. The issue is fixed in version 1.23.1. Evidence limits are based on source-provided information and CVE metadata. Defenders should verify libheif version and exposure to potential attacks.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.