CVE-2026-82357 json
RT-Labs AB C-Open CANopen NULL pointer dereference
published 2026-10-01 38 d ago modified 2026-10-07 32 d ago also EUVD-2026-91022
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 21%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
cisa vex VA-26-275-02 updated cvss 6.5
C-Open CANopen stack multiple vulnerabilities
-
RT-Labs AB C-Open <1.1.1affected: vendor fix rt-labs.com
-
RT-Labs AB C-Open 1.1.1fixed: vendor fix rt-labs.com
From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 32 d ago
Exploit prediction
0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| CNA | 4.0 | 7.1 | CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| CNA | 4.0 | 7.1 | CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- RT-Labs AB C-Open
Classification
- Weakness
-
- CWE-476 NULL Pointer Dereference
References
-
rt-labs.com
/wp-content/uploads/2026/09/RRTL-260929-01.pdf
vendor-advisory
-
github.com
/rtlabs-com/c-open/releases/tag/public%2Fv1.1.1
release-notes
-
raw.githubusercontent.com
/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-26-275-02.json
third-party-advisory
-
cve.org
/CVERecord?id=CVE-2026-82357
vdb-entry
Sources
- CVE List CVE-2026-82357
- NVD CVE-2026-82357
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.