CVE-2026-84447
libheif: Derived-image indirect reference chains and tiled offsets bypass decode caching and MemoryHandle limits, causing CPU/memory amplification DoS
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.1 and earlier, crafted grid, iovl, and iden reference graphs can repeatedly decode the same base image because processed_ids is copied per branch and ImageItem::decode_image() has no shared operation budget. This vulnerability is fixed in 1.23.2.
| CWE | CWE-770 |
| Vendor | strukturag |
| Product | libheif |
| Published | Sep 18, 2026 |
| Last Updated | Sep 18, 2026 |
Stay Ahead of the Next One
Get instant alerts for strukturag libheif
Be the first to know when new high vulnerabilities affecting strukturag libheif are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
strukturag / libheif
< 1.23.2