CVE-2022-37012 json
This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Unified Automation OPC UA C…
published 2023-03-29 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-39669
- cvss
- 7.5
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.8%
- EPSS 1.8% chance of exploitation in 30 days, percentile 78%
- public exploits
- 0
- none known
Summary
This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Unified Automation OPC UA C++ Demo Server 1.7.6-537. Authentication is not required to exploit this vulnerability. The specific flaw exists within the OpcUa_SecureListener_ProcessSessionCallRequest method. A crafted OPC UA message can force the server to incorrectly update a reference count. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-16927.
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 20 mo ago
Exploit prediction
1.78% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected products
- Unified Automation OPC UA C++ Demo Server
Classification
- Weakness
-
- CWE-911 Improper Update of Reference Count
References
-
zerodayinitiative.com
/advisories/ZDI-22-1030/
third-party-advisory, vdb-entry
-
documentation.unified-automation.com
/uasdkcpp/1.7.7/CHANGELOG.txt
release-notes
Sources
- CVE List CVE-2022-37012
- NVD CVE-2022-37012
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