CVE-2026-9758: Improper Certificate Validation in S2OPC
Published Jun 10, 2026
·Updated
Improper comparison with the certificates trusted list in S2OPC allows an attacker well-formed untrusted certificate to be considered trusted
Affected Software
1 affected component
Systerel S2OPC
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
S2OPCto a version that resolves this vulnerability.Fixed in > 1.7.2
Event History
Jun 10, 2026
CVE Published
via MITRE·12:32 PM
Data Sourced
via MITRE·12:32 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·02:16 PM
DescriptionSeverityWeakness
Jun 29, 58424
Event
via FIRST·03:15 AM
Frequently Asked Questions
1
What is the severity of CVE-2026-9758?
CVE-2026-9758 has a severity rating of high with a score of 7.3.
2
How do I fix CVE-2026-9758?
To fix CVE-2026-9758, upgrade S2OPC to a release version greater than 1.7.2.
3
What impact does CVE-2026-9758 have?
CVE-2026-9758 can lead to untrusted certificates being incorrectly considered trusted, potentially allowing unauthorized access.
4
What software is affected by CVE-2026-9758?
CVE-2026-9758 affects Systerel S2OPC software.
5
When was CVE-2026-9758 published?
CVE-2026-9758 was published on June 10, 2026.