CVE-2025-41066 — MEDIUM (5.3)

Vulnerability Description

Horde Groupware v5.2.22 has a user enumeration vulnerability that allows an unauthenticated attacker to determine the existence of valid accounts on the system. To exploit the vulnerability, an HTTP request must be sent to ‘/imp/attachment.php’ including the parameters ‘id’ and ‘u’. If the specified user exists, the server will return the download of an empty file; if it does not exist, no download will be initiated, which unequivocally reveals the validity of the user.

CVSS Score

5.3

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Horde	Groupware	5.2.22

Related Weaknesses (CWE)

CWE-200

References

https://www.incibe.es/en/incibe-cert/notices/aviso/disclosure-sensitive-informatThird Party Advisory

FAQ

What is CVE-2025-41066?

CVE-2025-41066 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Horde Groupware v5.2.22 has a user enumeration vulnerability that allows an unauthenticated attacker to determine the existence of valid accounts on the system. To exploit the vulnerability, an HTTP r...

How severe is CVE-2025-41066?

CVE-2025-41066 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-41066?

Check the references section above for vendor advisories and patch information. Affected products include: Horde Groupware.