Blender before 4.5.15 and 5.x before 5.2.3 contains a heap buffer overflow vulnerability caused by integer overflow in ptcache_data_alloc() when reading point cache files. Attackers can supply a crafted point cache file with a large totpoint value alongside a .blend file to crash Blender or execute code as the user.
https://projects.blender.org/blender/blender/pulls/164279
https://projects.blender.org/blender/blender/commit/a0c62db3db61803f86e874bc05407890ce4a1e43
https://projects.blender.org/blender/blender/commit/4f8a3270213b1ee67b44fe122ace3debdec3de47
Published: 2026-10-30
Updated: 2026-10-30
Base Score: 7.2
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
Severity: High
Base Score: 7.8
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Severity: High
Base Score: 8.5
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Severity: High