Vulnerability · Published Oct 30, 2026 · Assigned by VulnCheck
CVE-2026-119721Blender before 4.5.15 and 5.x before 5.2.3 Out-of-Bounds Read via blo_bhead_id Accessors
Medium 6.1
In plain English
A medium-severity out-of-bounds read in Blender from Blender Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities).
Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.2%top 93.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | blender | no fix listed | DEBIAN-CVE-2026-119721 |
| Debian:13 | blender | no fix listed | DEBIAN-CVE-2026-119721 |
| Ubuntu:22.04:LTS | blender | no fix listed | UBUNTU-CVE-2026-119721 |
| Ubuntu:24.04:LTS | blender | no fix listed | UBUNTU-CVE-2026-119721 |
| Ubuntu:26.04:LTS | blender | no fix listed | UBUNTU-CVE-2026-119721 |
| Ubuntu:26.10 | blender | no fix listed | UBUNTU-CVE-2026-119721 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Blender Foundation | Blender | 0 – before 4.5.155.0.0 – before 5.2.3 |
Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
References
- https://projects.blender.org/blender/blender/pulls/164279 patch
- https://projects.blender.org/blender/blender/commit/c5d6faf04bf3f17efb6c404896ef0e7427784da5 patch
- https://projects.blender.org/blender/blender/commit/7de4986e74ed47f67e78eb4b76609bb6d1ae8a0e patch
- https://projects.blender.org/blender/blender/commit/495deb9efff880c42aa88110aec0ea2c0fb1eb07 patch
- https://projects.blender.org/blender/blender/commit/94d99b362b0d236dcf07a96c1c8f9f5389d0583c patch
- https://projects.blender.org/blender/blender product
- VulnCheck Advisory: Blender before 4.5.15 and 5.x before 5.2.3 Out-of-Bounds Read via blo_bhead_id Accessors third-party-advisory