CVE-2026-54800

MEDIUMPre-NVD 4.84.8—
EchelonGraph scoreHIGH confidence

Score 4.8 from GitHub Security Advisory published 2026-07-09. a secondary CVSS source baseline 4.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
4.8
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions < V26.20), SICORE Base system (All versions < V26.20.0). The affected application ships with a default configuration that disables all OPC UA security mechanisms. This could allow an attacker to gain unauthorized access and control over critical system functions.

CVSS v3
4.8
EG Score
4.8(high)
EPSS
4.2%
KEV
Not listed

Published

July 9, 2026

Last Modified

July 9, 2026

Advisory Details (1)

Auto-updated Jul 9, 2026
No patch confirmed yet.
generic

SSA-229470

https://cert-portal.siemens.com/productcert/html/ssa-229470.html

Vendor Advisories for CVE-2026-54800(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 22× in last 7d / 22× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 16:57 UTCEPSS rescore
  3. 2026-07-15 02:00 UTCEPSS rescore
  4. 2026-07-15 02:00 UTCEPSS rescore
  5. 2026-07-15 00:11 UTCEG score recompute
  6. 2026-07-15 00:11 UTCGHSA enrichment
  7. 2026-07-13 22:31 UTCEPSS rescore
  8. 2026-07-13 22:13 UTCEG score recompute
  9. 2026-07-13 22:13 UTCGHSA enrichment
  10. 2026-07-13 06:13 UTCEPSS rescore
  11. 2026-07-13 06:13 UTCEPSS rescore
  12. 2026-07-12 20:15 UTCEG score recompute
  13. 2026-07-12 20:15 UTCGHSA enrichment
  14. 2026-07-12 05:46 UTCEPSS rescore
  15. 2026-07-11 18:17 UTCEG score recompute
  16. 2026-07-11 18:17 UTCGHSA enrichment
  17. 2026-07-11 08:27 UTCEPSS rescore
  18. 2026-07-11 08:27 UTCEPSS rescore
  19. 2026-07-10 16:20 UTCEG score recompute
  20. 2026-07-10 16:20 UTCGHSA enrichment
  21. 2026-07-09 14:22 UTCEG score recompute
  22. 2026-07-09 14:20 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-54800?
CVE-2026-54800 is a medium vulnerability published on July 9, 2026. A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions < V26.20), SICORE Base system (All versions < V26.20.0). The affected application ships with a default configuration that disables all OPC UA security mechanisms. This could allow an attacker to gain…
When was CVE-2026-54800 disclosed?
CVE-2026-54800 was first published in the National Vulnerability Database on July 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54800 actively exploited?
CVE-2026-54800 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-54800?
CVE-2026-54800 has a CVSS v3 base score of 4.8 (NVD).
How do I remediate CVE-2026-54800?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54800, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-54800

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