CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2020-8867
High (7.5) in opcfoundation unified architecture .net-standard. EPSS 2.6% chance of exploitation in the next 30 days.
This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of OPC Foundation UA .NET Standard 1.04.358.30. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of sessions. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to create a denial-of-service condition against the application. Was ZDI-CAN-10295.
Severity
- EPSS
- 2.6% chance of exploitation in the next 30 days; higher than 85% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-613, CWE-367
- Published
- Modified
- Record from
- the NVD, synced
Affected
- opcfoundation:unified_architecture_.net-standard
References
- https://opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2020-8867.pdf
- https://www.zerodayinitiative.com/advisories/ZDI-20-536/
- https://opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2020-8867.pdf
- https://www.zerodayinitiative.com/advisories/ZDI-20-536/