Medium severity · published Jul 14, 2025
CVE-2025-24391
Possible user enumeration
5.3
CVSS
0.3%
EPSS
No
On KEV
Description
A vulnerability in the External Interface of OTRS allows conclusions to be drawn about the existence of user accounts through different HTTP response codes and messages. This enables an attacker to systematically identify valid email addresses.
This issue affects:
* OTRS 7.0.X
* OTRS 8.0.X
* OTRS 2023.X
* OTRS 2024.X
* OTRS 2025.X
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OT
OTRS · OTRS AG
7.0.x; 8.0.x; 2023.x; 2024.x; 2025.x through 2025.5.x · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-24391
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-24391
otrs.com
https://otrs.com/release-notes/otrs-security-advisory-2025-07/
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