CVE-2025-30035: Lack of API authentication allowing session generation for any user

Severity: critical (CVSS 9.0 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-02 · updated 2026-06-17
Weakness: CWE-306

Description

The vulnerability enables an attacker to fully bypass authentication in CGM CLININET and gain access to any active user account by supplying only the username, without requiring a password or any other credentials. Obtaining a session ID is sufficient for session takeover and grants access to the system with the privileges of the targeted user.

Affected products

CGM CLININET: before 2025.MS4 — fixed in 2025.MS4

How to fix

Upgrade to a fixed version: CGM CLININET 2025.MS4. Check the vendor advisory for mitigations.

References

https://cert.pl/en/posts/2026/03/CVE-2025-10350/
https://https://www.cgm.com/pol_pl/products/szpital/cgm-clininet.html

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