CVE-2026-119719
highBlender 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 overflo…
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.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://projects.blender.org/blender/blender disclosure@vulncheck.com
- https://projects.blender.org/blender/blender/commit/71c10a0217d5e331b215b76773ad23b64974bd... disclosure@vulncheck.com
- https://projects.blender.org/blender/blender/commit/d723c68112d216099c9b24dab5c8440bab7add... disclosure@vulncheck.com
- https://projects.blender.org/blender/blender/pulls/164279 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/blender-before-4.5.15-and-5-x-before-5.2.3-heap-buffe... disclosure@vulncheck.com