LocalSend up to 1.17.0 channel accessible

Summaryinfo

A vulnerability was found in LocalSend up to 1.17.0 and classified as problematic. The affected element is an unknown function. The manipulation results in channel accessible. This vulnerability was named CVE-2025-54792. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in LocalSend up to 1.17.0. It has been classified as problematic. Affected is an unknown code. The manipulation with an unknown input leads to a channel accessible vulnerability. CWE is classifying the issue as CWE-300. The product does not adequately verify the identity of actors at both ends of a communication channel, or does not adequately ensure the integrity of the channel, in a way that allows the channel to be accessed or influenced by an actor that is not an endpoint. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

LocalSend is an open-source app to securely share files and messages with nearby devices over local networks without needing an internet connection. In versions 1.16.1 and below, a critical Man-in-the-Middle (MitM) vulnerability in the software's discovery protocol allows an unauthenticated attacker on the same local network to impersonate legitimate devices, silently intercepting, reading, and modifying any file transfer. This can be used to steal sensitive data or inject malware, like ransomware, into files shared between trusted users. The attack is hardly detectable and easy to implement, posing a severe and immediate security risk. This issue was fixed in version 1.17.0.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2025-54792 since 07/29/2025. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1557.

Upgrading to version 1.17.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch e8635204ec782ded45bc7d698deb60f3c4105687 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-23410). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• LocalSend

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17.0

License

• open-source

Website

• Product: https://github.com/localsend/localsend/

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Once again VulDB remains the best source for vulnerability data.

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