CVE-2026-27546

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-16. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

An unauthenticated remote attacker can exploit an authentication bypass in the _account_log function to log in as an admin, even when accounts are properly configured.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
59(Track)
EG Risk 59/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
60%
KEV
Not listed

Published

September 16, 2026

Last Modified

September 16, 2026

Advisory Details (3)

Auto-updated Sep 16, 2026
No patch confirmed yet.
generic

Carlo Gavazzi Automation: YL212* and YN115* are affected by multiple security vulnerabilities

https://www.certvde.com/en/advisories/VDE-2026-028/
generic

Phoenix Contact: Multiple vulnerabilities in the firmware of IOL MA8 EIP DI8 and IOL MA8 PN DI8 devices

https://www.certvde.com/en/advisories/VDE-2026-027/
generic

Pepperl+Fuchs: ICE2-* and ICE3-* are affected by multiple security vulnerabilities

https://www.certvde.com/en/advisories/VDE-2026-014/

Vendor Advisories for CVE-2026-27546(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 36× in last 7d / 36× 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. 2026-09-19 18:38 UTCEG score recompute
  2. 2026-09-19 18:38 UTCGHSA enrichment
  3. 2026-09-19 14:44 UTCGHSA enrichment
  4. 2026-09-19 10:50 UTCGHSA enrichment
  5. 2026-09-19 06:56 UTCGHSA enrichment
  6. 2026-09-19 03:02 UTCGHSA enrichment
  7. 2026-09-18 23:08 UTCEG score recompute
  8. 2026-09-18 23:08 UTCGHSA enrichment
  9. 2026-09-18 19:28 UTCEPSS rescore
  10. 2026-09-18 19:27 UTCEPSS rescore
  11. 2026-09-18 19:15 UTCGHSA enrichment
  12. 2026-09-18 15:20 UTCGHSA enrichment
  13. 2026-09-18 11:26 UTCGHSA enrichment
  14. 2026-09-18 07:33 UTCGHSA enrichment
  15. 2026-09-18 03:39 UTCGHSA enrichment
  16. 2026-09-17 23:45 UTCEG score recompute
  17. 2026-09-17 23:45 UTCGHSA enrichment
  18. 2026-09-17 19:30 UTCEPSS rescore
  19. 2026-09-17 19:12 UTCGHSA enrichment
  20. 2026-09-17 14:53 UTCGHSA enrichment
  21. 2026-09-17 10:59 UTCGHSA enrichment
  22. 2026-09-17 07:06 UTCGHSA enrichment
  23. 2026-09-17 03:12 UTCGHSA enrichment
  24. 2026-09-16 23:18 UTCGHSA enrichment
  25. 2026-09-16 19:24 UTCEG score recompute
Show 11 more
  1. 2026-09-16 19:24 UTCGHSA enrichment
  2. 2026-09-16 18:52 UTCEG score recompute
  3. 2026-09-16 18:52 UTCGHSA enrichment
  4. 2026-09-16 16:14 UTCEG score recompute
  5. 2026-09-16 16:14 UTCGHSA enrichment
  6. 2026-09-16 14:08 UTCEPSS rescore
  7. 2026-09-16 12:19 UTCEG score recompute
  8. 2026-09-16 12:19 UTCGHSA enrichment
  9. 2026-09-16 08:26 UTCEG score recompute
  10. 2026-09-16 08:00 UTCEG score recompute
  11. 2026-09-16 07:54 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-27546?
CVE-2026-27546 is a critical vulnerability published on September 16, 2026. An unauthenticated remote attacker can exploit an authentication bypass in the accountlog function to log in as an admin, even when accounts are properly configured.
When was CVE-2026-27546 disclosed?
CVE-2026-27546 was first published in the National Vulnerability Database on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-27546 actively exploited?
CVE-2026-27546 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 40.2% of all scored CVEs.
What is the CVSS score of CVE-2026-27546?
CVE-2026-27546 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-27546?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-27546, 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

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