{"id":"CVE-2026-63409","title":"Deskflow is a keyboard and mouse sharing app","summary":"Deskflow is a keyboard and mouse sharing app. From 1.17.0 until continuous build 1.26.0.296, a malicious Deskflow server can send an odd-length DSOP vector to ServerProxy::setOptions() in src/lib/client/ServerProxy.cpp, causing the missi…","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","cwe":["CWE-125"],"published":"2026-08-17","updated":"2026-09-09","sourceUpdated":"2026-09-09T21:11:46.833","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63409","references":[{"url":"https://github.com/deskflow/deskflow/commit/8266fbbe6af93fa370018886c7f1f35d2cee8b3f","label":"security-advisories@github.com"},{"url":"https://github.com/deskflow/deskflow/security/advisories/GHSA-gmvh-3c73-m5gg","label":"security-advisories@github.com"},{"url":"https://github.com/deskflow/deskflow/security/advisories/GHSA-gmvh-3c73-m5gg","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd"],"epss":0.00323,"epssPercentile":0.25563,"ingestedAt":"2026-09-09T21:22:45.536Z","slug":"CVE-2026-63409","body":"## Overview\n\nDeskflow is a keyboard and mouse sharing app. From 1.17.0 until continuous build 1.26.0.296, a malicious Deskflow server can send an odd-length DSOP vector to ServerProxy::setOptions() in src/lib/client/ServerProxy.cpp, causing the missing value after the final option key to be read beyond the vector during the PacketStreamFilter::filterEvent to ServerProxy::handleData() to ServerProxy::parseHandshakeMessage() call chain and crash the connected client. This issue is fixed in continuous build 1.26.0.296.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}