DEBIAN-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.
DEBIAN-CVE-2026-63409
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-63409
deskflow
Source reference: /affected/0/package/name
- Affected versions
- 1.22.0+dfsg-7
Source reference:
/affected/0/versions1.23.0+dfsg-1Source reference:
/affected/0/versions1.23.0+dfsg-2Source reference:
/affected/0/versions1.24.0+dfsg-1Source reference:
/affected/0/versions1.24.0+dfsg-2Source reference:
/affected/0/versions1.25.0+dfsg-1Source reference:
/affected/0/versions1.25.0+dfsg-2Source reference:
/affected/0/versions1.25.0+dfsg-3Source reference:
/affected/0/versions1.26.0+dfsg-1Source reference:
/affected/0/versions1.26.0+dfsg-2Source reference:
/affected/0/versions1.26.0+dfsg-3Source reference:
/affected/0/versions1.26.0+dfsg-4Source reference:
/affected/0/versions1.26.0+dfsg-5Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
deskflow
Source reference: /affected/1/package/name
- Affected versions
- 1.22.0+dfsg-7
Source reference:
/affected/1/versions1.23.0+dfsg-1Source reference:
/affected/1/versions1.23.0+dfsg-2Source reference:
/affected/1/versions1.24.0+dfsg-1Source reference:
/affected/1/versions1.24.0+dfsg-2Source reference:
/affected/1/versions1.25.0+dfsg-1Source reference:
/affected/1/versions1.25.0+dfsg-2Source reference:
/affected/1/versions1.25.0+dfsg-3Source reference:
/affected/1/versions1.26.0+dfsg-1Source reference:
/affected/1/versions1.26.0+dfsg-2Source reference:
/affected/1/versions1.26.0+dfsg-3Source reference:
/affected/1/versions - Fixed versions
- 1.26.0+dfsg-4
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "deskflow",
"purl": "pkg:deb/debian/deskflow?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"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",
"1.26.0+dfsg-4",
"1.26.0+dfsg-5"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-63409.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.26.0+dfsg-4"
}
]
}
],
"package": {
"name": "deskflow",
"purl": "pkg:deb/debian/deskflow?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"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"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-63409.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #58114 · Revision 1
- Added to Heist Feed
- Publisher date