CVE-2026-119719

Blender before 4.5.15 and 5.x before 5.2.3 Heap Buffer Overflow via Thumbnail Extraction

HIGH
7.8
CVSS Score
Published: October 30, 2026 at 03:16 PM UTC
Updated: October 30, 2026 at 07:14 PM UTC
1 product affected across 1 vendorBlender

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

CVSS

7.8HIGHVulnCheck
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-190

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