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CVE-2026-74238— TIER IV Nebula 1.2.0 Heap Out-of-Bounds Read via VLP32 UDP Decoder

Quick assessment

Affected
tier4 nebula
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

TIER IV Nebula是日本TIER IV公司的一款工业互联网企业应用软件。 TIER IV Nebula 1.2.0及之前版本存在缓冲区错误漏洞，该漏洞源于Vlp32Decoder::unpack()函数存在越界读取，可能导致未经身份验证的远程攻击者通过发送短UDP数据报使解码器越界读取堆内存，并将伪造数据发布到下游PointCloud2消息中。

CVSS 7.5 · High EPSS 0.48% · P40

Affected Version Matrix 1

VendorProduct Version RangeStatus
tier4 nebula ≤ 1.2.0 affected
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I. Basic Information for CVE-2026-74238

Vulnerability Information
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Vulnerability Title
TIER IV Nebula 1.2.0 Heap Out-of-Bounds Read via VLP32 UDP Decoder
Source: CVE Program / CVE List V5
Vulnerability Description
TIER IV Nebula through 1.2.0 contains an out-of-bounds read vulnerability in the Vlp32Decoder::unpack() function that allows unauthenticated remote attackers to cause the decoder to read past the end of a received UDP buffer into adjacent heap memory by sending a short UDP datagram. Attackers can send a malformed datagram to the Velodyne UDP sensor port, which lacks sender-address restrictions present in other drivers, causing fabricated points derived from heap memory contents to be silently published into downstream PointCloud2 messages consumed by Autoware nodes.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
TIER IV Nebula 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TIER IV Nebula是日本TIER IV公司的一款工业互联网企业应用软件。 TIER IV Nebula 1.2.0及之前版本存在缓冲区错误漏洞，该漏洞源于Vlp32Decoder::unpack()函数存在越界读取，可能导致未经身份验证的远程攻击者通过发送短UDP数据报使解码器越界读取堆内存，并将伪造数据发布到下游PointCloud2消息中。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
tier4 nebula 0 ~ 1.2.0 -

II. Public POCs for CVE-2026-74238

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7287 chars
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III. Intelligence Information for CVE-2026-74238

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Vendor Advisories for CVE-2026-74238 (1)

News Coverage for CVE-2026-74238 (1)

IV. Related Vulnerabilities

Same product: nebula
Same weakness: CWE-125

V. Comments for CVE-2026-74238

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