CVE-2026-6899Disclosure

LOWCVSS 5.6 · MEDIUM

Signal is active with 3 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

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0.0/ 10 priority

Sources & remediation

Other references

https://gitlab.com/systerel/S2OPC/-/work_items/1739

Weakness type (CWE)

CWE-299

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

3 mentions across 1 observed day

What's happening

Technical details provided in 3 signals
Disclosure: 2 classified signals
General: 1 classified signal
3 total mentions across 1 day

Deep dive

Activity timeline3 mentions / 1d

Signal classification2 categories

Disclosure

266.7%

General

133.3%

Referenced assets3 URLs

By indicator

Full discourse3 posts

Infoflowcloud@infoflowcloud136d
Disclosure
🚨*CVE* CVE-2026-6899 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 l… https://www.cve.org/CVERecord?id=CVE-2026-6899 ----- Traducción: CVE-2026-6899 Ver… http://infoflow.cloud`
Post summary
CVE-2026-6899 details a certificate revocation issue in CycloneCrypto’s S2OPC wrapper, limited to the first CRL found, and the post merely cites the CVE record without mentioning exploits, patches, or active attacks.
0000023
79 followersView on X
CVE@CVEnew136d
Disclosure
CVE-2026-6899 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 l… https://www.cve.org/CVERecord?id=CVE-2026-6899
Post summary
The post announces CVE‑2026‑6899, noting a flaw in CycloneCrypto’s certificate revocation logic that only checks the first CRL, but it provides no PoC, exploit, patch, or evidence of active exploitation.
00000161
57.6K followersView on X
Vulmon Vulnerability Feed@VulmonFeeds136d
General
CVE-2026-6899 Certificate Revocation Bypass in S2OPC Library CycloneCrypto Cryptographic Wrapper https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-6899
Post summary
The entry merely lists CVE‑2026‑6899 as a certificate revocation bypass in the S2OPC library, offering no evidence of exploitation, patches, or proof‑of‑concept details.
0000041
4.0K followersView on X

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