CVE-2026-9758

Improper Certificate Validation in S2OPC

Published Jun 10, 2026 CVSS 3.1 · 7.3 High EPSS < 1% KEV · Not listed
Description
Improper comparison with the certificates trusted list in S2OPC allows an attacker well-formed untrusted certificate to be considered trusted

Remediation

Vendor Solution

Upgrade S2OPC to release version > 1.7.2

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Systerel
Systerel s2opc
Vendors & Products Systerel
Systerel s2opc
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Improper comparison with the certificates trusted list in S2OPC allows an attacker well-formed untrusted certificate to be considered trusted
Title Improper Certificate Validation in S2OPC
Weaknesses CWE-295
References
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitLab
Published
Updated
Jun 10, 2026, 1:54 PM
Reserved
May 27, 2026, 6:03 PM
Status
Deferred
Published
Jun 10, 2026, 2:16 PM
Modified
Oct 26, 2026, 11:10 AM