---
id: CVE-2026-119722
title: >-
  Blender before 4.5.15 and 5.x before 5.2.3 Heap Out-of-Bounds Access via
  read_struct()
summary: >-
  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 …
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-125
vendor: Blender Foundation
product: Blender
affected:
  - Blender < 4.5.15
  - Blender >= 5.0.0 < 5.2.3
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-30T15:43:02.180191Z'
published: '2026-10-30'
updated: '2026-10-30'
sourceUpdated: '2026-10-30T15:43:14.258Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-119722'
references:
  - url: 'https://projects.blender.org/blender/blender/pulls/164279'
  - url: >-
      https://projects.blender.org/blender/blender/commit/c5d6faf04bf3f17efb6c404896ef0e7427784da5
  - url: >-
      https://projects.blender.org/blender/blender/commit/7de4986e74ed47f67e78eb4b76609bb6d1ae8a0e
  - url: 'https://projects.blender.org/blender/blender'
  - url: >-
      https://www.vulncheck.com/advisories/blender-before-4.5.15-and-5-x-before-5.2.3-heap-out-of-bounds-access-via-read-struct
    label: >-
      VulnCheck Advisory: Blender before 4.5.15 and 5.x before 5.2.3 Heap
      Out-of-Bounds Access via read_struct()
tags:
  - cve.org
epss: 0.00178
epssPercentile: 0.07448
ingestedAt: '2026-11-05T16:07:30.464Z'
---

## Overview

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

- `Blender < 4.5.15`
- `Blender >= 5.0.0 < 5.2.3`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.