CVE-2026-82946 json
Null Pointer Dereference in Mailbox Error Handling
published 16d ago modified 16d ago also EUVD-2026-109679
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 6%
- public exploits
- 0
- none known
Summary
SOEM version 2.0.0 and earlier contains a vulnerability where a malicious device can crash the master system. When the software receives an error response, it clears an internal pointer but continues processing. If another message arrives before timeout, the software attempts to use the cleared pointer, causing a crash. An attacker can trigger this with a simple sequence of two messages.
Patch / fix
- RT-Labs AB SOEM 2.0.1
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- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 16d ago
Exploit prediction
0.17% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-11).
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 |
Affected products
- RT-Labs AB SOEM
Classification
References
-
rt-labs.com
/wp-content/uploads/2026/10/RRTL-260921-01.pdf
vendor-advisory
Sources
- CVE List CVE-2026-82946
- NVD CVE-2026-82946
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