CVE-2026-63409

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.

CVSS v3 8.2 HIGH

8.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/deskflow/deskflow/commit/8266fbbe6af93fa370018886c7f1f35d2cee8b3f
https://github.com/deskflow/deskflow/security/advisories/GHSA-gmvh-3c73-m5gg
https://github.com/deskflow/deskflow/security/advisories/GHSA-gmvh-3c73-m5gg

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-17 21:16

Updated : 2026-09-09 21:11

NVD link : CVE-2026-63409

Mitre link : CVE-2026-63409

CVE.ORG link : CVE-2026-63409

JSON object : View

Products Affected

No product.

CWE

CWE-125

Out-of-bounds Read

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