CVE-2026-63409
HighCVSS 8.2Exploitation Probability (EPSS)
Low risk18th percentile - higher than 18% of all known CVEs
Summary
Deskflow from version 1.17.0 until continuous build 1.26.0.296 has a vulnerability where a malicious Deskflow server can send an odd-length DSOP vector, causing an out-of-bounds read and crashing the connected client.
Risk Assessment
A remote attacker could cause a client crash, potentially leading to service disruption or further attacks.
Recommendation
Upgrade Deskflow to continuous build 1.26.0.296 or later, which contains the fix.
Original NVD description (English source)
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 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.