EUVD-2026-13855Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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
Lifecycle Timeline
6DescriptionCVE.org
The WebSocket Application Programming Interface lacks restrictions on the number of authentication requests. This absence of rate limiting may allow an attacker to conduct denial-of-service attacks by suppressing or mis-routing legitimate charger telemetry, or conduct brute-force attacks to gain unauthorized access.
AnalysisAI
Missing rate limiting in CTEK Chargeportal's WebSocket API enables remote attackers to launch denial-of-service attacks against electric vehicle charging infrastructure telemetry or conduct brute-force authentication attacks. All versions of Chargeportal are affected. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Remote unauthenticated exploitation against default configurations of CTEK Chargeportal where the WebSocket API endpoint is network-accessible (AV:N/AC:L/PR:N). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Real-world risk assessment reveals moderate priority despite high CVSS 8.7. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker identifies a CTEK Chargeportal instance exposed to the internet via reconnaissance of charging network infrastructure. They script automated WebSocket connection attempts to the authentication endpoint, flooding the server with thousands of concurrent authentication requests. … |
| Remediation | No vendor-released patch version is identified in available data at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory all CTEK Chargeportal deployments and document current versions; verify network segmentation for WebSocket API endpoints. …
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External POC / Exploit Code
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