ECHO-D0FA-76AB-4B21 Heap-buffer-overflow READ in ht_undo_impl() via codestream/channel width mismatch in the HTJ2K decoder. HTJ2K support (OpenEXRCore internal_ht.cpp / ht_undo_impl) was added in 3.4.0; affected range is 3.4.0-3.4.11. The codec does not exist in 3.1.x, so 3.1.13 is not affected (Debian reports only a fixed_version, not the affected range).
| Reporter | Title | Published | Views | Family All 28 |
|---|---|---|---|---|
 | CVE-2026-45696 | 18 Jun 202620:31 | – | attackerkb |
 | CVE-2026-45696 | 18 Jun 202620:31 | – | alpinelinux |
 | ANT-2026-QQ2P9M9V · openexr · Heap-buffer-overflow | 21 Jul 202605:04 | – | anthropic |
 | OpenEXR -- 3.4.12 fixes multiple vulnerabilities | 25 May 202600:00 | – | freebsd |
 | CVE-2026-45696 | 18 Jun 202621:53 | – | circl |
 | CVE-2026-45696 | 18 Jun 202620:31 | – | cve |
 | CVE-2026-45696 OpenEXR HTJ2K decoder heap buffer over-read in ht_undo_impl() (DoS) | 18 Jun 202620:31 | – | cvelist |
 | CVE-2026-45696 | 18 Jun 202620:31 | – | debiancve |
 | EUVD-2026-37948 | 18 Jun 202620:31 | – | euvd |
 | FreeBSD : OpenEXR -- 3.4.12 fixes multiple vulnerabilities (ca91c020-5820-11f1-b38d-9be2e6022e28) | 28 May 202600:00 | – | nessus |
10
| Source | Link |
|---|---|
| advisory | www.advisory.echohq.com/cve/CVE-2026-45696 |
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15 Sep 2026 03:33Current
5.6Medium risk
Vulners AI Score5.6
CVSS 3.16.5 - 7.1
CVSS 48.3
EPSS0.00418
SSVC