CVE-2026-6899

MEDIUM

CVSS v3.1: 5.6 · EPSS: 0.0002 (5.9 percentile)

NetworkNo privilegesNo user interaction

Source data as of:

At a glance

Severity
MEDIUM
CVSS
5.6 v3.1 · NVD
EPSS
0.0002 (5.9 percentile) · FIRST.org
CISA KEV
No
Attack conditions (CVSS vector)
NetworkNo privilegesNo user interaction · Source: NVD Vector
Published
2026-06-09 · Modified: 2026-06-09
References
Jump to references (1)

CVSS / EPSS / KEV

CVSS v3.1 5.6 / 10 MEDIUM Source: NVD
EPSS 0.0002 5.9 percentile Source: FIRST.org
CISA KEV No Source: CISA

Source — CVSS: NVD · EPSS: FIRST.org · KEV: CISA. Data & Sources

Description

Check for certificate revocation only considers the first matching CRL and ignores other valid CRLs of the same CA in the CycloneCrypto cryptographic wrapper of S2OPC library. It might allow connection between an OPC UA client and server using a revoked certificate.

Record details

CVE ID
CVE-2026-6899
CVSS (v3.1)
5.6 (MEDIUM)
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Exploitability subscore
2.2
Impact subscore
3.4
EPSS
0.0002 (5.9 percentile) — 2026-06-10
CISA KEV
No
Weakness (CWE)
CWE-299
Affected configurations (CPE)
0
Published
2026-06-09
Modified
2026-06-09
Status
Deferred

References

Reference URLs as listed by NVD, grouped by a mechanical match on the link's host/pattern. Labels describe the link type only.

Related records

Other records sharing a factual facet, for cross-reference. A descriptive neighbourhood — ordering does not imply priority and is not a recommendation.

Published the same year

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