Cyber Posture

CVE-2026-26305

High

Published: 27 February 2026

Published
27 February 2026
Modified
05 March 2026
KEV Added
—
Patch
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CVSS Score 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0010 28.1th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Description

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…

more

access.

Likely Mitigating ControlsAI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

AC-7 Unsuccessful Logon Attempts
addresses: CWE-307

This control directly enforces limits on consecutive invalid logon attempts and automatic response (e.g., lockout) to prevent brute-force exploitation of authentication mechanisms.

IA-10 Adaptive Authentication
addresses: CWE-307

Specific conditions can include excessive failed attempts, triggering stronger authentication that restricts brute-force exploitation.

Security SummaryAI

CVE-2026-26305 is a vulnerability in the WebSocket Application Programming Interface that lacks restrictions on the number of authentication requests due to the absence of rate limiting. This issue, tied to CWE-307 (Improper Restriction of Excessive Authentication Attempts), carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) and was published on 2026-02-27T01:16:20.617. It affects systems handling charger telemetry, as detailed in the associated CISA ICS advisory.

A remote attacker requires no privileges or user interaction and can exploit this over the network with low complexity. Successful exploitation enables denial-of-service attacks by suppressing or mis-routing legitimate charger telemetry, or brute-force attacks to achieve unauthorized access.

CISA advisory ICSA-26-057-08 provides details on the vulnerability, available at https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-08 and the corresponding CSAF JSON at https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-057-08.json. Vendor contact information is at https://www.mobility46.se/en/contact-us.

Details

CWE(s)
CWE-307

Affected Products

mobility46
mobility46.se
all versions

MITRE ATT&CK Enterprise TechniquesAI

T1110 Brute Force Credential Access
Adversaries may use brute force techniques to gain access to accounts when passwords are unknown or when password hashes are obtained.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1499 Endpoint Denial of Service Impact
Adversaries may perform Endpoint Denial of Service (DoS) attacks to degrade or block the availability of services to users.
attack.mitre.org →
Why these techniques?

Lack of rate limiting on public-facing WebSocket auth API directly enables brute force credential attacks (T1110) and application-layer DoS via request flooding (T1499); exploitation occurs remotely against exposed service (T1190).

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

References