CVE-2025-54816CRITICAL 9.8EPSS p33.3%

CVE-2025-54816CVE-2025-54816

Description

This vulnerability occurs when a WebSocket endpoint does not enforce proper authentication mechanisms, allowing unauthorized users to establish connections. As a result, attackers can exploit this weakness to gain unauthorized access to sensitive data or perform unauthorized actions. Given that no authentication is required, this can lead to privilege escalation and potentially compromise the security of the entire system.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.42% probability of exploitation · percentile 33.3% · 2026-06-19T12:03:05Z
Published2026-01-22
Last modified2026-02-02

Underlying weaknesses· 1

CWE-306

References

  1. https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-022-08.json
  2. https://www.cisa.gov/news-events/ics-advisories/icsa-26-022-08

1

TypeTargetConfidenceTier
WeaknessMissing Authentication for Critical Functioncwe-3060%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.