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CVE-2026-119721medium6.9

Blender before 4.5.15 and 5.x before 5.2.3 Out-of-Bounds Read via blo_bhead_id Accessors

Impact

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.

Source excerpt · VulnCheck

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

Blender Foundation · VulnCheck

Blender

2 ranges
VulnCheck version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before 4.5.15

semver versions

5.0.0 → before 5.2.3

semver versions

unaffected

unknown

Other versions: unaffected

Original source 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.

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-119721

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-125 ↗

Out-of-bounds Read

VulnCheck

Related →

Environment requirements

These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.

VulnCheck · platform conditions

Any condition may hold

Vulnerable product

cpe:2.3:a:blender:blender:*:*:*:*:*:*:*:*

Before: 4.5.15

Vulnerable product

cpe:2.3:a:blender:blender:*:*:*:*:*:*:*:*

From (inclusive): 5.0.0

Before: 5.2.3

Original applicability statements
[
  {
    "nodes": [
      {
        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:blender:blender:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "4.5.15"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:blender:blender:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "5.0.0",
            "versionEndExcluding": "5.2.3"
          }
        ]
      }
    ]
  }
]
Contributing organizations · 2
VulnCheck

Assigning organization

2026-10-30
CISA-ADP

Additional data publisher

2026-10-30

What changed

Follow changes
  1. CVE · CVE-2026-119721

    Observed 2026-10-30T18:59:14.077Z · upstream updated 2026-10-30T18:36:11.655Z

    Prioritization updated

    before

    []

    after

    [
  {
    "source": "CISA-ADP",
    "type": "SSVC",
    "role": "CISA Coordinator",
    "timestamp": "2026-10-30T18:25:13.808921Z",
    "decisions": [
      {
        "name": "Exploitation",
        "value": "none"
      },
      {
        "name": "Automatable",
        "value": "no"
      },
      {
        "name": "Technical Impact",
        "value": "partial"
      }
    ]
  }
]

Large field values are marked as truncated previews. Original source snapshots remain retained.

Showing up to 50 most recent observed changes.

References

7 sources
projects.blender.org/blender/blender/pulls/164279
patchVulnCheck
projects.blender.org/blender/blender/commit/c5d6faf04bf3f17efb6c404896ef0e7427784da5
patchVulnCheck
projects.blender.org/blender/blender/commit/7de4986e74ed47f67e78eb4b76609bb6d1ae8a0e
patchVulnCheck
projects.blender.org/blender/blender/commit/495deb9efff880c42aa88110aec0ea2c0fb1eb07
patchVulnCheck
projects.blender.org/blender/blender/commit/94d99b362b0d236dcf07a96c1c8f9f5389d0583c
patchVulnCheck
projects.blender.org/blender/blender
productVulnCheck
View 1 more references
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
third-party-advisoryVulnCheck