HIGH 8.5 NVD
CVE-2026-119719
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
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.
References
- https://projects.blender.org/blender/blender
- https://projects.blender.org/blender/blender/commit/71c10a0217d5e331b215b76773ad23b64974bd
- https://projects.blender.org/blender/blender/commit/d723c68112d216099c9b24dab5c8440bab7add
- https://projects.blender.org/blender/blender/pulls/164279
- https://www.vulncheck.com/advisories/blender-before-4.5.15-and-5-x-before-5.2.3-heap-buffe
This high severity vulnerability with a CVSS score of 8.5 was published on 2026-10-30 via NVD.
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