DEBIAN-CVE-2026-63409

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Source

https://security-tracker.debian.org/tracker/CVE-2026-63409

Import Source

https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-63409.json

JSON Data

https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-63409

Upstream

CVE-2026-63409

Published

2026-08-17T21:16:46.200Z

Modified

2026-08-20T09:00:07.211626554Z

Severity

8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H CVSS Calculator

Summary

[none]

Details

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.

References

https://security-tracker.debian.org/tracker/CVE-2026-63409

Affected packages

Debian:13 / deskflow

Package

Name: deskflow
Purl: pkg:deb/debian/deskflow?arch=source&distro=trixie

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.22.0+dfsg-7

1.23.0+dfsg-1

1.23.0+dfsg-2

1.24.0+dfsg-1

1.24.0+dfsg-2

1.25.0+dfsg-1

1.25.0+dfsg-2

1.25.0+dfsg-3

1.26.0+dfsg-1

1.26.0+dfsg-2

1.26.0+dfsg-3

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-63409.json"

Debian:14 / deskflow