TI-2026-83196 Aliases CVE-2026-119721 GHSA-8hxf-4775-5j3p

Blender Out-of-Bounds Read via blo_bhead_id Accessors

LOW 30CWE-125Published 2026-10-30 · Updated 2026-10-30

Key facts

Attack vector: Local
Privileges required: None
User interaction: Passive
Attack complexity: Low
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: Low · None · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Blender before 4.5.15 and from 5.0.0 before 5.2.3 is affected. The ID field accessors in readfile.cc read block fields without checking the block length, which is a missing bounds check (CWE-125). An attacker supplies a crafted .blend file with short ID blocks. When a user browses or appends from it, the flaw causes heap over-reads that crash Blender or disclose heap memory.

Written with Claude Haiku 5.5 from the sources below · 2026-10-31

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00168 6th percentileScored 2026-11-07

Fix Fixed Blender (Blender Foundation): 4.5.15, 5.2.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Blender	Blender	before 4.5.15; 5.0.0 to before 5.2.3	4.5.15, 5.2.3	Patch available	CNA

Blender VendorBlender Affected before 4.5.15; 5.0.0 to before 5.2.3 Fixed in 4.5.15, 5.2.3 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:blender:blender::::::::	before 4.5.15; 5.0.0 to before 5.2.3	Vulnerable	Blender

cpe:2.3:a:blender:blender:*:*:*:*:*:*:*:* Versions before 4.5.15; 5.0.0 to before 5.2.3 Vulnerable ·Blender

Remediation

The Blender Foundation fixes this in Blender 4.5.15 and 5.2.3. Update Blender to 4.5.15 or 5.2.3.

Written with Claude Haiku 5.5 from the sources below · 2026-10-31

Fix · CNA Blender (Blender Foundation) Fixed in 4.5.15, 5.2.3

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-10-30
Blender 4.5.15, 5.2.3
5 records Highest priority Priority LOW 5 LOW
Other records, highest priority first
- TI-2026-83197 Heap out-of-bounds access in Blender read_struct() lets attackers run codePriority LOW 38
- TI-2026-83194 Heap buffer overflow in Blender thumbnail extractionPriority LOW 38
- TI-2026-83193 Heap buffer overflow in Blender point cache file readingPriority LOW 38
Show all 5 records →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-30 Threatist record created from CVE-2026-119721
2026-10-30 CISA SSVC decision points changed
2026-10-30 Priority changed: MEDIUM → LOW
2026-10-30 Alias added: GHSA-8hxf-4775-5j3p
2026-10-31 Affected versions changed · Red Hat
2026-10-31 CVSS score added · Red Hat

References

Patch 5

Other 1

https://projects.blender.org/blender/blender

TI-2009-03658 Blender 2.34, 2.35a, 2.40, and 2.49b allows remote attackers to execute arbitrary code… CVSS 2.0HIGH 9.3
TI-2007-01216 Eval injection vulnerability in the (a) kmz_ImportWithMesh.py Script for Blender 0.1.9h… CVSS 2.0HIGH 9.3
TI-2005-03127 Eval injection vulnerability in bvh_import.py in Blender 2.36 allows attackers to execute… CVSS 3.1HIGH 7.3
TI-2017-02138 Integer overflow in Blender CVSS 3.1HIGH 7.8
TI-2005-02979 Buffer overflow in blenderplay in Blender Player 2.37a allows attackers to execute… CVSS 2.0HIGH 7.5
TI-2026-83197 Heap out-of-bounds access in Blender read_struct() lets attackers run code CVSS 4.0HIGH 8.5

See all 39 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences