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CVE-2026-82357— RT-Labs AB C-Open CANopen NULL pointer dereference

Quick assessment

Affected
RT-Labs AB C-Open
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.

RT-Labs AB C-Open CANopen 在使用 LSS（Layered Service Specification，分层服务规范）协议配置设备时存在空指针解引用漏洞。用户应用程序定义的对象可能未包含对象 0x1018（身份对象）所需的所有子索引。一个未经认证、可访问 CAN 总线的远程攻击者（例如通过被攻陷的节点）可以在身份对象配置错误的设备上触发 LSS 协议，并可能导致设备崩溃。该漏洞已在版本 1.1.1 中修复。

CVSS 6.5 · Medium

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2026-82357

Vulnerability Information
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Vulnerability Title
RT-Labs AB C-Open CANopen NULL pointer dereference
Source: CVE Program / CVE List V5
Vulnerability Description
RT-Labs AB C-Open CANopen contains a NULL pointer dereference if the LSS protocol is used to configure the device. An object defined by the user application may not have all required subindexes for object 0x1018. An unauthenticated, remote attacker with access to the CAN bus, through a compromised node for instance, can initiate the LSS protocol on a device with a misconfigured identity object and potentially crash the device. Fixed in 1.1.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
RT-Labs AB C-Open 0 ~ 1.1.1 -

II. Public POCs for CVE-2026-82357

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III. Intelligence Information for CVE-2026-82357

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News Coverage for CVE-2026-82357 (1)

Vendor Pages for CVE-2026-82357 (1)

Other References for CVE-2026-82357 (2)

IV. Related Vulnerabilities

Same product: C-Open
Same vendor: RT-Labs AB
Same weakness: CWE-476

V. Comments for CVE-2026-82357

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