CVE-2026-63409CWE-125

CVE-2026-63409

High · published August 18, 2026

CVSS v3.1
8.2
EPSS
0%
Percentile
38.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00452 · 38.3th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2026-08-18T01:16Z
References (3)
EPSS history
Timeline
  • 17 AUG 20:57Z
    Deskflow: Odd-length DSOP options vector causes out-of-bounds read in Deskflow client
    cvelistv5