CVE-2026-63409

HighCVSS 8.2/10Last modified Sep 9, 2026

Description

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.

Metrics

CVSS 3.1 8.2/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Aug 17, 2026
Last modified
Sep 9, 2026
NVD status
Deferred

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CVE-2026-63409: High severity, CVSS 8.2 | Vulnix