Blender before 4.5.15 and 5.x before 5.2.3 Heap Out-of-Bounds Access via read_struct()
Impact
Blender before 4.5.15 and 5.x before 5.2.3 contains a heap out-of-bounds access vulnerability in read_struct() that skips size validation when a .blend file's SDNA struct layout compares equal. Attackers can supply a crafted .blend file with short blocks so field reads, writes, and pointer dereferences overrun heap memory, causing crashes or code execution.
Source excerpt · VulnCheckAffected packages
Affected products
Vendor version evidence. Product records are separate from automatic dependency matching.
Blender Foundation · VulnCheck
Blender
2 ranges
Blender Foundation · VulnCheck
Blender
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
Other versions: unaffected
Original source description
Blender before 4.5.15 and 5.x before 5.2.3 contains a heap out-of-bounds access vulnerability in read_struct() that skips size validation when a .blend file's SDNA struct layout compares equal. Attackers can supply a crafted .blend file with short blocks so field reads, writes, and pointer dereferences overrun heap memory, causing crashes or code execution.
Inside the record
Evidence available
Describes the evidence in this view, not whether the product is safe.
Original records
CVE-2026-119722View 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.
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
Assigning organization
Additional data publisher
What changed
Follow changesLarge field values are marked as truncated previews. Original source snapshots remain retained.