What is CVE-2025-40664?

CVE-2025-40664 is a critical-severity vulnerability in Tcman Gim, classified under Missing Authentication for Critical Function. CVSS score: 9.1/10. Published 2025-05-26.

How severe is CVE-2025-40664?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Is CVE-2025-40664 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Tcman Gim

CVE-2025-40664

Missing authentication vulnerability in TCMAN GIM v11. This allows an unauthenticated attacker to access the resources /frmGestionUser.aspx/GetData, /frmGestionUser.aspx/updateUser and /frmGestionUser.aspx/DeleteUser.

Vulnerability class: Broken Authentication

Published 2025-05-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.005 (43.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 43.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Tcman Gim — versions 11.0, 11

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-tcman-gim-0 (Third Party Advisory)

Frequently asked questions

What is CVE-2025-40664?: CVE-2025-40664 is a critical-severity vulnerability in Tcman Gim, classified under Missing Authentication for Critical Function. CVSS score: 9.1/10. Published 2025-05-26.
How severe is CVE-2025-40664?: Critical severity. CVSS v3 base score is 9.1 out of 10.
Is CVE-2025-40664 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.