VulnerabilityAwaiting Analysis

CVE-2026-18257

Improper validity period check for root issuer certificate in CycloneCrypto cryptographic wrapper of S2OPC allows a certificate issued by this root issuer to be considered trusted

MEDIUM 5.6EPSS 0.10%

Does this matter?

Lower severity and a low EPSS score (0.10%). Track it; it rarely justifies an emergency change on its own.

Description

Improper validity period check for root issuer certificate in CycloneCrypto cryptographic wrapper of S2OPC allows a certificate issued by this root issuer to be considered trusted

CVSS 3.1: 5.6 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
EPSS: 0.10% probability · 1th percentile
CISA KEV: Not listed
Weakness: CWE-295
Source: cve@gitlab.com

References

https://gitlab.com/systerel/S2OPC/-/work_items/1804

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.