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CVE-2026-119722— Blender before 4.5.15 and 5.x before 5.2.3 Heap Out-of-Bounds Access via read_struct()

Quick assessment

Affected
Blender Foundation Blender
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Blender 4.5.15 之前版本以及 5.x 系列中 5.2.3 之前的版本，在 函数中存在堆越界访问漏洞。当 文件的 SDNA 结构体布局相等时，该函数会跳过大小验证。攻击者可构造包含短数据块的 文件，导致字段读取、写入及指针解引用操作溢出堆内存，进而引发程序崩溃或远程代码执行。

CVSS 7.8 · High

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
Blender Foundation Blender < 4.5.15 affected
5.0.0< 5.2.3 affected
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I. Basic Information for CVE-2026-119722

Vulnerability Information
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Vulnerability Title
Blender before 4.5.15 and 5.x before 5.2.3 Heap Out-of-Bounds Access via read_struct()
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Blender Foundation Blender 0 ~ 4.5.15 -

II. Public POCs for CVE-2026-119722

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-119722

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Other References for CVE-2026-119722 (5)

Same Patch Batch · Blender Foundation · 2026-10-30 · 5 CVEs total

CVE-2026-119718 7.8 HIGH Blender before 4.5.15 and 5.x before 5.2.3 Heap Buffer Overflow via Point Cache
CVE-2026-119719 7.8 HIGH Blender before 4.5.15 and 5.x before 5.2.3 Heap Buffer Overflow via Thumbnail Extraction
CVE-2026-119721 6.1 MEDIUM Blender before 4.5.15 and 5.x before 5.2.3 Out-of-Bounds Read via blo_bhead_id Accessors
CVE-2026-119720 5.5 MEDIUM Blender before 4.5.15 and 5.x before 5.2.3 Out-of-Bounds Read via GLOB Block

IV. Related Vulnerabilities

Same product: Blender
Same vendor: Blender Foundation
Same weakness: CWE-125