What is CVE-2026-9758?

CVE-2026-9758 is a high-severity vulnerability in Systerel S2opc, classified under Improper Certificate Validation. CVSS score: 7.3/10. Published 2026-06-10.

How severe is CVE-2026-9758?

High severity. CVSS v3 base score is 7.3 out of 10.

Vulnerability in Systerel S2opc

CVE-2026-9758

Improper comparison with the certificates trusted list in S2OPC allows an attacker well-formed untrusted certificate to be considered trusted

Vulnerability class: Improper Certificate Validation

EPSS: 0.001 (2.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

Affected products

Systerel S2opc — versions 1.5.0

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

cve@gitlab.com

Frequently asked questions

What is CVE-2026-9758?: CVE-2026-9758 is a high-severity vulnerability in Systerel S2opc, classified under Improper Certificate Validation. CVSS score: 7.3/10. Published 2026-06-10.
How severe is CVE-2026-9758?: High severity. CVSS v3 base score is 7.3 out of 10.