CVE-2025-41066
published 2025-12-02CVE-2025-41066: Horde Groupware v5.2.22 has a user enumeration vulnerability that allows an unauthenticated attacker to determine the existence of valid accounts on the…
PriorityP333medium5.3CVSS 3.1
AVNACLPRNUINSUCLINAN
EPSS
0.21%
10.8th percentile
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.
Affected
5 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | php-horde-groupware | — | — |
| horde | groupware | — | — |
| msrc | cbl2_kernel_5.15.186.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_kernel_5.15.200.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_kernel_5.15.202.1-1_on_cbl_mariner_2.0 | — | — |
CVSS provenance
nvdv3.15.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
nvdv4.06.9MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
osv6.9MEDIUM
vendor_debian6.9MEDIUM
vendor_msrc5.5MEDIUM
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GHSA
GHSA-j5gg-5w34-g43r: Horde Groupware v5
ghsa_unreviewed·2025-12-02
CVE-2025-41066 [MEDIUM] CWE-200 GHSA-j5gg-5w34-g43r: Horde Groupware v5
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.
OSV
CVE-2025-41066: Horde Groupware v5
osv·2025-12-02·CVSS 6.9
CVE-2025-41066 [MEDIUM] CVE-2025-41066: Horde Groupware v5
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.
Debian
CVE-2025-41066: php-horde-groupware - Horde Groupware v5.2.22 has a user enumeration vulnerability that allows an unau...
vendor_debian·2025·CVSS 6.9
CVE-2025-41066 [MEDIUM] CVE-2025-41066: php-horde-groupware - Horde Groupware v5.2.22 has a user enumeration vulnerability that allows an unau...
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.
Scope: local
bookworm: open
bullseye: open
sid: open
Microsoft
ibmvnic: Add tx check to prevent skb leak
vendor_msrc·2024-07-09·CVSS 5.5
CVE-2024-41066 [MEDIUM] CWE-401 ibmvnic: Add tx check to prevent skb leak
ibmvnic: Add tx check to prevent skb leak
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
Linux: Linux
Customer Action Required: Yes
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-12-02
Published