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.

Attack Vector Local

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Blender Foundation Blender unaffected
Version Status Constraints
0 affected < 4.5.15
5.0.0 affected < 5.2.3

No data.

No data.

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Project Subscriptions

Vendors Products
Blender Subscribe
Blender Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://projects.blender.org/blender/blender cve-icon cve-icon
https://projects.blender.org/blender/blender/commit/495deb9efff880c42aa88110aec0ea2c0fb1eb07 cve-icon cve-icon
https://projects.blender.org/blender/blender/commit/7de4986e74ed47f67e78eb4b76609bb6d1ae8a0e cve-icon cve-icon
https://projects.blender.org/blender/blender/commit/94d99b362b0d236dcf07a96c1c8f9f5389d0583c cve-icon cve-icon
https://projects.blender.org/blender/blender/commit/c5d6faf04bf3f17efb6c404896ef0e7427784da5 cve-icon cve-icon
https://projects.blender.org/blender/blender/pulls/164279 cve-icon cve-icon
https://www.vulncheck.com/advisories/blender-before-4.5.15-and-5-x-before-5.2.3-out-of-bounds-read-via-blo-bhead-id-accessors cve-icon cve-icon
History

Fri, 30 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Blender before 4.5.15 and 5.x before 5.2.3 Out-of-Bounds Read via blo_bhead_id Accessors
First Time appeared Blender
Blender blender
Weaknesses CWE-125
CPEs cpe:2.3:a:blender:blender:*:*:*:*:*:*:*:*
Vendors & Products Blender
Blender blender
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-30T15:16:17.738Z

Reserved: 2026-10-30T14:49:29.119Z

Link: CVE-2026-119721

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-30T16:17:55.767

Modified: 2026-10-30T16:17:55.767

Link: CVE-2026-119721

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses