CVE-2025-40668: gim Auth Bypass (CVSS 6.5)

Description

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.

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CVSS v3.1 Score

6.5

MEDIUM

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

Weakness Type (CWE)

CWE-863 Incorrect Authorization

Affected Products

Vendor	Product	Versions
tcman	gim	All

References

Other References

https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-tcman-gim-1

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2025-40668? +

CVE-2025-40668 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-40668? +

CVE-2025-40668 affects products from tcman, specifically: gim. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-40668? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2025-40668