High severity7.5NVD Advisory· Published Mar 29, 2023· Updated Jun 17, 2026
CVE-2022-37012
CVE-2022-37012
Description
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.
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Affected products
3cpe:2.3:a:unified-automation:opc_ua_c\+\+_demo_server:1.7.6.537:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:unified-automation:opc_ua_c\+\+_demo_server:1.7.6.537:*:*:*:*:*:*:*
- (no CPE)range: = 1.7.6-537
- (no CPE)range: 1.7.6-537
Patches
Vulnerability mechanics
References
2- www.zerodayinitiative.com/advisories/ZDI-22-1030/nvdThird Party AdvisoryVDB Entry
- documentation.unified-automation.com/uasdkcpp/1.7.7/CHANGELOG.txtnvdRelease Notes
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