Letmein is an authenticating port knocker. Prior to version 10.2.1, The connection limiter is implemented incorrectly. It allows an arbitrary amount of simultaneously incoming connections (TCP, UDP and Unix socket) for the services letmeind and letmeinfwd. Therefore, the command line option num-connections is not effective and does not limit the number of simultaneously incoming connections. This issue has been patched in version 10.2.1.
Metrics
Affected Vendors & Products
References
History
Tue, 24 Jun 2025 15:15:00 +0000
Type | Values Removed | Values Added |
---|---|---|
Metrics |
ssvc
|
Tue, 24 Jun 2025 03:45:00 +0000
Type | Values Removed | Values Added |
---|---|---|
Description | Letmein is an authenticating port knocker. Prior to version 10.2.1, The connection limiter is implemented incorrectly. It allows an arbitrary amount of simultaneously incoming connections (TCP, UDP and Unix socket) for the services letmeind and letmeinfwd. Therefore, the command line option num-connections is not effective and does not limit the number of simultaneously incoming connections. This issue has been patched in version 10.2.1. | |
Title | Letmein connection limiter allows an arbitrary amount of simultaneous connections | |
Weaknesses | CWE-770 CWE-799 |
|
References |
| |
Metrics |
cvssV4_0
|

Status: PUBLISHED
Assigner: GitHub_M
Published: 2025-06-24T03:13:29.370Z
Updated: 2025-06-24T14:42:51.785Z
Reserved: 2025-06-18T03:55:52.036Z
Link: CVE-2025-52570

Updated: 2025-06-24T14:42:32.108Z

Status : Awaiting Analysis
Published: 2025-06-24T04:15:50.360
Modified: 2025-06-26T18:58:14.280
Link: CVE-2025-52570

No data.