Auth bypass in Tcman Gim
CVE-2025-40668
Incorrect authorization vulnerability in TCMAN's GIM v11. This vulnerability allows an attacker, with low privilege level, to change the password of other users through a POST request using the parameters idUser, PasswordActual, PasswordNew and PasswordNewRepeat in /PC/WebService.aspx/validateChangePassword%C3%B1a. To exploit the vulnerability the PasswordActual parameter must be empty.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (17.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 17.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Tcman Gim — versions 11.0, 11
Weakness classification (CWE)
References
- www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-tcman-gim-1 (Third Party Advisory)
Frequently asked questions
- What is CVE-2025-40668?
- CVE-2025-40668 is a medium-severity vulnerability in Tcman Gim, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2025-06-09.
- How severe is CVE-2025-40668?
- Medium severity. CVSS v3 base score is 6.5 out of 10.