CVE-2026-54479

HIGH 7.3

EVoke Systems EVoke CSMS Insufficient Session Expiration

CVSS Score

7.3

EPSS Score

0.0%

EPSS Percentile

0th

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. 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	CWE-613
Vendor	evoke
Product	evoke csms
Published	Jun 25, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Affected Versions

EVoke / EVoke CSMS

All versions

References

NVD ↗ CVE.org ↗ EPSS Data ↗

evokesystems.com: https://evokesystems.com/contact-us/ cisa.gov: https://www.cisa.gov/news-events/ics-advisories/icsa-26-176-02 github.com: https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-176-02.json

Credits

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