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CVE-2026-119719 Details

Description

Blender before 4.5.15 and 5.x before 5.2.3 contains a heap buffer overflow vulnerability in the blend file thumbnail extractor caused by 32-bit integer overflow in thumb_data_vertical_flip(). Attackers can craft a .blend file with malicious TEST block dimensions that trigger an out-of-bounds write when blender-thumbnailer or the Windows shell extension previews it, causing crashes or code execution.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://projects.blender.org/blender/blender	[email protected]	Product
https://projects.blender.org/blender/blender/commit/71c10a0217d5e331b215b76773ad23b64974bd97	[email protected]	Patch
https://projects.blender.org/blender/blender/commit/d723c68112d216099c9b24dab5c8440bab7add08	[email protected]	Patch
https://projects.blender.org/blender/blender/pulls/164279	[email protected]	Issue TrackingPatch
https://www.vulncheck.com/advisories/blender-before-4.5.15-and-5-x-before-5.2.3-heap-buffer-overflow-via-thumbnail-extraction	[email protected]	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-190	Integer Overflow or Wraparound	[email protected]

Affected Products

Product	Versions
blender blender	< 4.5.15 >= 5.0.0, < 5.2.3
CPE cpe:2.3:a:blender:blender:::::::: Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Nov 4, 2026	CVE Modified	CISA-ADP
Nov 3, 2026	Initial Analysis	[email protected]
Oct 30, 2026	New CVE Received	[email protected]