What’s Vulnerable › Vulnerabilities
CVE-2026-9758: Improper Certificate Validation in S2OPC
- Severity: high (CVSS 7.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.1% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-06-10 · updated 2026-10-26
- Weakness: CWE-295
Description
Improper comparison with the certificates trusted list in S2OPC allows an attacker well-formed untrusted certificate to be considered trusted
Affected products
- Systerel S2OPC: from 1.5.0 before 1.7.3 — fixed in 1.7.3
How to fix
Upgrade to a fixed version: Systerel S2OPC 1.7.3. Check the vendor advisory for mitigations.
References
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