CVE-2026-27649
published 2026-03-20CVE-2026-27649: The WebSocket backend uses charging station identifiers to uniquely associate sessions but allows multiple endpoints to connect using the same session…
PriorityP335medium6.5CVSS 3.1
AVNACLPRLUINSUCNINAH
EPSS
0.33%
24.6th percentile
The WebSocket backend uses charging station identifiers to uniquely associate sessions but allows multiple endpoints to connect using the same session identifier. This implementation results in predictable session identifiers and enables session hijacking or shadowing, where the most recent connection displaces the legitimate charging station and receives backend commands intended for that station. This vulnerability may allow unauthorized users to authenticate as other users or enable a malicious actor to cause a denial-of-service condition by overwhelming the backend with valid session requests.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| ctek | chargeportal | — | — |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvdv4.06.9MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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CISA ICS
CTEK Chargeportal
cisa_ics·2026-03-19·CVSS 9.4
[CRITICAL] CTEK Chargeportal
ICS Advisory
##
CTEK Chargeportal
Release DateMarch 19, 2026
Alert CodeICSA-26-078-06
Related topics:
Industrial Control System Vulnerabilities, Industrial Control Systems
View CSAF
## Summary
Successful exploitation of these vulnerabilities could enable attackers to gain unauthorized administrative control over vulnerable charging stations or disrupt charging services through denial-of-service attacks.
The following versions of CTEK Chargeportal are affected:
- Chargeportal vers:all/*
CVSS
Vendor
Equipment
Vulnerabilities
| v3 9.4
| CTEK
| CTEK Chargeportal
| Missing Authentication for Critical Function, Improper Restriction of Excessive Authentication Attempts, Insufficient Session Expiration, Insufficiently Protected Credentials
## Background
- Criti
VulDB
CTEK Chargeportal session expiration (icsa-26-078-06)
vuldb·2026-05-07·CVSS 6.9
CVE-2026-27649 [MEDIUM] CTEK Chargeportal session expiration (icsa-26-078-06)
A vulnerability was found in CTEK Chargeportal and classified as critical. This vulnerability affects unknown code. Executing a manipulation can lead to session expiration.
This vulnerability is registered as CVE-2026-27649. It is possible to launch the attack remotely. No exploit is available.
GHSA
GHSA-h5wq-j227-wjwh: The WebSocket backend uses charging station identifiers to uniquely associate sessions but allows multiple endpoints to connect using the same session
ghsa_unreviewed·2026-03-21
CVE-2026-27649 [MEDIUM] CWE-613 GHSA-h5wq-j227-wjwh: The WebSocket backend uses charging station identifiers to uniquely associate sessions but allows multiple endpoints to connect using the same session
The WebSocket backend uses charging station identifiers to uniquely associate sessions but allows multiple endpoints to connect using the same session identifier. This implementation results in predictable session identifiers and enables session hijacking or shadowing, where the most recent connection displaces the legitimate charging station and receives backend commands intended for that station. This vulnerability may allow unauthorized users to authenticate as other users or enable a malicious actor to cause a denial-of-service condition by overwhelming the backend with valid session requests.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-03-20
Published