CVE-2026-82357RT-Labs AB C-Open CANopen NULL pointer dereference
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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
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-476
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- cisa-cg
- NVD analysis
- Deferred
- Record last updated
- Oct 7, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
RT-Labs AB C-Open rt_labs:c_open (from the name) | before 1.1.1; 1.1.1 not affected | CNA record |
References
- https://rt-labs.com/wp-content/uploads/2026/09/RRTL-260929-01.pdfvendor-advisory
- https://github.com/rtlabs-com/c-open/releases/tag/public%2Fv1.1.1release-notes
- https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-26-275-02.jsonthird-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2026-82357vdb-entry
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.