Vulnerability · Published Aug 17, 2026 · Assigned by GitHub_M
CVE-2026-65832Deskflow - Unauthenticated server-controlled out-of-bounds read in ServerProxy::setOptions / translateKey modifier-table indexing
High 8.2
In plain English
A high-severity out-of-bounds read in deskflow from deskflow. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 46% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Deskflow is a keyboard and mouse sharing app. Prior to continuous build 1.26.0.299, a remote unauthenticated Deskflow server can send kMsgDSetOptions (DSOP) values to ServerProxy::setOptions() in src/lib/client/ServerProxy.cpp so that the value following a modifier option poisons m_modifierTranslationTable, after which ServerProxy::translateKey() or ServerProxy::translateModifierMask() indexes the seven-row s_translationTable or s_masks arrays out of bounds, disclosing four bytes at an attacker-selected relative offset or crashing the connected client; an odd option count also causes an out-of-bounds OptionsList read. This issue is fixed in continuous build 1.26.0.299.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | deskflow | no fix listed | DEBIAN-CVE-2026-65832 |
| Debian:14 | deskflow | 1.26.0+dfsg-4 | DEBIAN-CVE-2026-65832 |
| Ubuntu:26.04:LTS | deskflow | no fix listed | UBUNTU-CVE-2026-65832 |
| Ubuntu:26.10 | deskflow | no fix listed | UBUNTU-CVE-2026-65832 |
Affected products (as reported)
Weakness: CWE-125, CWE-129 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H