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.
History

Mon, 04 Aug 2025 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 04 Aug 2025 09:30:00 +0000

Type Values Removed Values Added
First Time appeared Localsend
Localsend localsend
Vendors & Products Localsend
Localsend localsend

Fri, 01 Aug 2025 23:15:00 +0000

Type Values Removed Values Added
Description 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.
Title LocalSend is Vulnerable to Man-in-the-Middle Attacks, Leading to File Interception
Weaknesses CWE-300
CWE-345
References
Metrics cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2025-08-01T23:04:29.207Z

Updated: 2025-08-04T14:19:20.337Z

Reserved: 2025-07-29T16:50:28.394Z

Link: CVE-2025-54792

cve-icon Vulnrichment

Updated: 2025-08-04T14:19:08.787Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-08-01T23:15:25.143

Modified: 2025-08-04T15:15:32.670

Link: CVE-2025-54792

cve-icon Redhat

No data.