CVE-2025-54816 json
EVMAPA Missing Authentication for Critical Function
published 9mo ago modified 4mo ago also EUVD-2026-4500
- cvss
- 9.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 40%
- public exploits
- 0
- none known
Summary
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.
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Check with FencerVendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
cisa ICSA-26-022-08 updated cvss 9.4
EVMAPA
-
EVMAPAaffected: vendor fix
From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 9mo ago
Exploit prediction
0.47% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- EVMAPA EVMAPA
Classification
- Weakness
-
- CWE-306 Missing Authentication for Critical Functionality
References
-
cisa.gov
/news-events/ics-advisories/icsa-26-022-08
third-party-advisory, us-government-resource
-
github.com
/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-022-08.json
third-party-advisory
Sources
- CVE List CVE-2025-54816
- NVD CVE-2025-54816
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