Out-of-bounds Read in Blender Foundation
CVE-2026-119721
Blender before 4.5.15 and 5.x before 5.2.3 contains an out-of-bounds read vulnerability in blo_bhead_id_* accessors in readfile.cc that read ID fields without block length checks. Attackers can supply a crafted .blend file with short ID blocks that, when browsed or appended from, causes heap over-reads leading to crashes or heap memory disclosure.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- projects.blender.org/blender/blender/pulls/164279 (patch)
- projects.blender.org/blender/blender/commit/c5d6faf04bf3f17efb6c404896ef0e74277… (patch)
- projects.blender.org/blender/blender/commit/7de4986e74ed47f67e78eb4b76609bb6d1a… (patch)
- projects.blender.org/blender/blender/commit/495deb9efff880c42aa88110aec0ea2c0fb… (patch)
- projects.blender.org/blender/blender/commit/94d99b362b0d236dcf07a96c1c8f9f5389d… (patch)
- projects.blender.org/blender/blender (product)
- www.vulncheck.com/advisories/blender-before-4.5.15-and-5-x-before-5.2.3-out-of-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-119721?
- CVE-2026-119721 is a medium-severity vulnerability in Blender Foundation, classified under Out-of-bounds Read. CVSS score: 6.1/10. Published 2026-10-30.
- How severe is CVE-2026-119721?
- Medium severity. CVSS v3 base score is 6.1 out of 10.