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High 7.3Published Jun 10, 2026

CVE-2026-9758Improper Certificate Validation in S2OPC

Updated under an hour ago ()

Does this affect you?

It affects Systerel S2OPC. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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

CVSS
7.3 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Weakness (CWE)
CWE-295
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
GitLab
NVD analysis
Deferred
Record last updated
Jun 10, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
Systerel S2OPC
systerel:s2opc (from the name)
from 1.5.0 before 1.7.3
CNA record

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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