Auth bypass in Evmapa
CVE-2025-54816
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L.
EPSS exploit prediction
EPSS: 0.005 (38.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.000
Affected products
- Evmapa — versions All versions
Weakness classification (CWE)
References
- www.cisa.gov/news-events/ics-advisories/icsa-26-022-08 (US Government Resource, Third Party Advisory)
- github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-022-08.js… (Third Party Advisory)
Frequently asked questions
- What is CVE-2025-54816?
- CVE-2025-54816 is a critical-severity vulnerability in Evmapa, classified under Missing Authentication for Critical Function. CVSS score: 9.4/10. Published 2026-01-22.
- How severe is CVE-2025-54816?
- Critical severity. CVSS v3 base score is 9.4 out of 10.