CVE-2026-119719
HIGH severity · CVSS 7.8 · Integer overflow
7.8CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://projects.blender.org/blender/blender/commit/71c10a0217d5e331b215b76773ad23b64974bd97 ↗
Additional information
- NVD record
- https://projects.blender.org/blender/blender/commit/71c10a0217d5e331b215b76773ad23b64974bd97Patch
- https://projects.blender.org/blender/blender/commit/d723c68112d216099c9b24dab5c8440bab7add08Patch
- https://projects.blender.org/blender/blender/pulls/164279Patch
- https://projects.blender.org/blender/blender
- https://www.vulncheck.com/advisories/blender-before-4.5.15-and-5-x-before-5.2.3-heap-buffer-overflow-via-thumbnail-extractionAdvisory