Blender before 4.5.15 and 5.x before 5.2.3 Out-of-Bounds Read via blo_bhead_id Accessors
CVE-2026-119721 is fixed in blender on 1 platform by blender 5.2.3 (version 5.2.3), released October 22, 2026. 2 other affected products have no fix yet. It is not reported as exploited. Patch Radar priority: Routine.
Blender before 4.5.15 and 5.x before 5.2.3 contains an out-of-bounds read vulnerability in blo_bhead_id_* accessors in readfile.cc that read ID fields without block length checks. Attackers can supply a crafted .blend file with short ID blocks that, when browsed or appended from, causes heap over-reads leading to crashes or heap memory disclosure.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| blender | 5.2.3 | blender 5.2.3 | Oct 22, 2026 |
| No fix yet | |||
| blender (Windows apps) | No fix yet | no-fix | n/a |
| blender (Windows apps) | No fix yet | no-fix | n/a |
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