WebSocket API Vulnerability in E-Power Products
CVE-2026-27778

8.7HIGH

Key Information:

Vendor

Epower

Status
Epower.ie
Vendor
CVE Published:
5 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-27778?

The WebSocket Application Programming Interface in E-Power systems is vulnerable due to a lack of restrictions on the number of authentication requests. This vulnerability can be exploited by attackers to perform denial-of-service attacks, which may disrupt legitimate charger telemetry. Additionally, the absence of proper rate limiting allows for potential brute-force attacks, enabling unauthorized access to sensitive systems and data.

Affected Version(s)

epower.ie All versions

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

PoC-Simulator_CVE-2026-27778
Created by KimJ6

References

https://epower.ie/support/
https://www.cisa.gov/news-events/ics-advisories/icsa-26-0...
https://github.com/cisagov/CSAF/blob/develop/csaf_files/O...

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Khaled Sarieddine and Mohammad Ali Sayed reported this vulnerability to CISA.
.