CVE-2026-25711
Published: 27 February 2026
Summary
CVE-2026-25711 is a medium-severity Insufficient Session Expiration (CWE-613) vulnerability in Chargemap Chargemap.Com. Its CVSS base score is 6.9 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 16.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 AC-10 (Concurrent Session Control) and IA-4 (Identifier Management).
Deeper analysis
CVE-2026-25711 is a vulnerability in the WebSocket backend used by charging station management systems, where session identifiers are derived from charging station identifiers. This design permits multiple endpoints to connect using the same session identifier, resulting in predictable session IDs. Consequently, the most recent connection can displace the legitimate charging station, hijacking or shadowing the session and intercepting backend commands intended for that station.
The vulnerability has a CVSS v3.1 base score of 7.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L), indicating high severity with network accessibility, low attack complexity, and no required privileges. Remote attackers can exploit it by connecting to the WebSocket backend with a known or predictable session identifier from a legitimate charging station. Successful exploitation enables unauthorized authentication as other users, session hijacking to receive commands, or denial-of-service by overwhelming the backend with valid session requests.
Mitigation guidance is detailed in CISA ICS Advisory ICSA-26-057-05, available at https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-05, along with the corresponding CSAF JSON file at https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-057-05.json and Chargemap's support page at https://chargemap.com/en-us/support.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-8936
Vulnerability details
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…
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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.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Vulnerability in public-facing WebSocket backend enables exploitation of the service for initial access (T1190); predictable session IDs derived from station identifiers directly facilitate hijacking of preexisting remote service sessions to intercept commands or displace legitimate connections (T1563).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Enforces cryptographic or protocol-level binding that makes session identifiers non-predictable and non-reusable across endpoints, directly blocking the hijacking/shadowing described in the CVE.
Requires unique, non-predictable identifiers for devices and sessions instead of deriving them directly from charging-station IDs, eliminating the root cause of predictable session tokens.
Limits concurrent sessions per identifier so a second connection cannot silently displace the legitimate charging station and receive its commands.