CVE-2026-119722
Received Received - Intake

Heap Out-of-Bounds Access in Blender

Publication date: 2026-10-30

Last updated on: 2026-10-30

Assigner: VulnCheck

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.

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Meta Information

Published
2026-10-30
Last Modified
2026-10-30
Generated
2026-10-30
AI Q&A
2026-10-30
EPSS Evaluated
N/A
NVD
CVE-2026-119722
EUVD
EUVD-2026-114127

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
Blender Foundation Blender 0
Blender Foundation Blender 5.0.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

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Executive Summary

Blender versions before 4.5.15 and 5.x before 5.2.3 have a heap out-of-bounds access flaw in the read_struct() function. When a .blend file's SDNA struct layout matches expected layouts, size validation is skipped. Attackers can craft malicious .blend files with short blocks, causing field reads, writes, and pointer dereferences to overrun heap memory. This can lead to crashes or arbitrary code execution.

Impact Analysis

If you open a maliciously crafted .blend file, this vulnerability could crash Blender or allow an attacker to execute arbitrary code on your system. Since .blend files are commonly shared, this could happen via email attachments, downloads, or collaborative projects. Users with older Blender versions are at higher risk.

Mitigation Strategies

Update Blender to version 4.5.15 or later, or 5.2.3 or later to address the heap out-of-bounds access vulnerability in read_struct().

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