CVE-2026-27778
Authentication Request Rate Limiting Flaw in WebSocket API Enables DoS, Brute-Force
Publication date: 2026-03-06
Last updated on: 2026-05-06
Assigner: ICS-CERT
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| epower | epower.ie | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-307 | The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists because the WebSocket Application Programming Interface does not limit the number of authentication requests that can be made.
Without such rate limiting, an attacker can exploit this by sending many authentication requests, which can lead to denial-of-service attacks or brute-force attempts to gain unauthorized access.
How can this vulnerability impact me? :
The vulnerability can impact you by allowing attackers to perform denial-of-service attacks that suppress or mis-route legitimate charger telemetry.
Additionally, attackers may conduct brute-force attacks to gain unauthorized access, potentially compromising system security.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know