CVE-2026-82357: CWE-476 NULL Pointer Dereference in RT-Labs AB C-Open
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.
AI Analysis
Technical Summary
RT-Labs AB C-Open CANopen contains a NULL pointer dereference vulnerability (CWE-476) triggered during the use of the LSS protocol to configure devices. The vulnerability arises if a user-defined object does not include all required subindexes for object 0x1018. An unauthenticated remote attacker with access to the CAN bus, possibly via a compromised node, can initiate the LSS protocol on a device with a misconfigured identity object, causing the device to crash. The vulnerability is addressed in version 1.1.1.
Potential Impact
An unauthenticated remote attacker with access to the CAN bus can cause a denial of service by crashing the affected device through the LSS protocol. There is no impact on confidentiality or integrity reported. The CVSS v3.1 base score is 6.5 (medium severity), reflecting the availability impact.
Mitigation Recommendations
Upgrade to RT-Labs AB C-Open version 1.1.1 or later, where this NULL pointer dereference vulnerability is fixed. No other mitigation is specified or required.
CVE-2026-82357: CWE-476 NULL Pointer Dereference in RT-Labs AB C-Open
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.
CVSS v3.1
Score 6.5medium
Affected software
RT-Labs AB
C-Open
pkg:github/rtlabs-com/c-openRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
RT-Labs AB C-Open CANopen contains a NULL pointer dereference vulnerability (CWE-476) triggered during the use of the LSS protocol to configure devices. The vulnerability arises if a user-defined object does not include all required subindexes for object 0x1018. An unauthenticated remote attacker with access to the CAN bus, possibly via a compromised node, can initiate the LSS protocol on a device with a misconfigured identity object, causing the device to crash. The vulnerability is addressed in version 1.1.1.
Potential Impact
An unauthenticated remote attacker with access to the CAN bus can cause a denial of service by crashing the affected device through the LSS protocol. There is no impact on confidentiality or integrity reported. The CVSS v3.1 base score is 6.5 (medium severity), reflecting the availability impact.
Mitigation Recommendations
Upgrade to RT-Labs AB C-Open version 1.1.1 or later, where this NULL pointer dereference vulnerability is fixed. No other mitigation is specified or required.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- cisa-cg
- Date Reserved
- 2026-08-28T18:10:39.170Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6abebc2fa43b0b3b89f67a56
Added to database: 10/01/2026, 20:01:51 UTC
Last enriched: 10/01/2026, 20:16:41 UTC
Last updated: 10/02/2026, 21:58:09 UTC
Views: 23
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