CVE-2023-27336
Last modified
CVE-2023-27336 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Softing edgeConnector Siemens OPC UA Server Null Pointer Dereference Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Softing edgeConnector Siemens. EPSS estimates a 0.75% chance of exploitation in the next 30 days.
Description
Softing edgeConnector Siemens OPC UA Server Null Pointer Dereference Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Softing edgeConnector Siemens. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of OPC client certificates. The issue results from dereferencing a NULL pointer. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-20508.
Metrics
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Softing | Edgeaggregator | < 3.70 |
| Softing | Edgeconnector | < 3.70 |
| Softing | Secure Integration Server | < 1.30 |
References
- https://www.zerodayinitiative.com/advisories/ZDI-23-1065/Third Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-23-1065/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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