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.

Attack Vector Local

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Blender Foundation Blender unaffected
Version Status Constraints
0 affected < 4.5.15
5.0.0 affected < 5.2.3

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Vendors Products
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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://projects.blender.org/blender/blender cve-icon cve-icon
https://projects.blender.org/blender/blender/commit/7de4986e74ed47f67e78eb4b76609bb6d1ae8a0e cve-icon cve-icon
https://projects.blender.org/blender/blender/commit/c5d6faf04bf3f17efb6c404896ef0e7427784da5 cve-icon cve-icon
https://projects.blender.org/blender/blender/pulls/164279 cve-icon cve-icon
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 cve-icon cve-icon
History

Fri, 30 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Fri, 30 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
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.
Title Blender before 4.5.15 and 5.x before 5.2.3 Heap Out-of-Bounds Access via read_struct()
First Time appeared Blender
Blender blender
Weaknesses CWE-125
CPEs cpe:2.3:a:blender:blender:*:*:*:*:*:*:*:*
Vendors & Products Blender
Blender blender
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.5, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-30T15:43:14.258Z

Reserved: 2026-10-30T14:49:29.492Z

Link: CVE-2026-119722

cve-icon Vulnrichment

Updated: 2026-10-30T15:43:07.623Z

cve-icon NVD

Status : Received

Published: 2026-10-30T16:17:55.907

Modified: 2026-10-30T16:17:55.907

Link: CVE-2026-119722

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-30T16:30:16Z

Weaknesses