Vulnerability · Published Oct 30, 2026 · Assigned by VulnCheck
CVE-2026-119722Blender before 4.5.15 and 5.x before 5.2.3 Heap Out-of-Bounds Access via read_struct()
High 7.8
In plain English
A high-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 7% of all known vulnerabilities).
Official description
Blender before 4.5.15 and 5.x before 5.2.3 contains a heap out-of-bounds access vulnerability in read_struct() that skips size validation when a .blend file's SDNA struct layout compares equal. Attackers can supply a crafted .blend file with short blocks so field reads, writes, and pointer dereferences overrun heap memory, causing crashes or code execution.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | blender | no fix listed | DEBIAN-CVE-2026-119722 |
| Debian:13 | blender | no fix listed | DEBIAN-CVE-2026-119722 |
| Ubuntu:22.04:LTS | blender | no fix listed | UBUNTU-CVE-2026-119722 |
| Ubuntu:24.04:LTS | blender | no fix listed | UBUNTU-CVE-2026-119722 |
| Ubuntu:26.04:LTS | blender | no fix listed | UBUNTU-CVE-2026-119722 |
| Ubuntu:26.10 | blender | no fix listed | UBUNTU-CVE-2026-119722 |
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:H/I:H/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 product
- VulnCheck Advisory: Blender before 4.5.15 and 5.x before 5.2.3 Heap Out-of-Bounds Access via read_struct() third-party-advisory