CVE-2026-65832

Received Received - Intake

Remote Code Execution in Deskflow

Publication date: 2026-08-17

Last updated on: 2026-08-17

Assigner: GitHub, Inc.

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.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-17

Last Modified

2026-08-17

Generated

2026-08-18

AI Q&A

2026-08-18

EPSS Evaluated

N/A

NVD

CVE-2026-65832

Affected Vendors & Products

Vendor	Product	Version / Range
deskflow	deskflow	1.26.0.299

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-125	The product reads data past the end, or before the beginning, of the intended buffer.
CWE-129	The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array.

Attack-Flow Graph

Executive Summary

This vulnerability in Deskflow allows a remote unauthenticated server to send specially crafted option values that corrupt memory in the connected client. Specifically, it manipulates the modifier translation table, causing out-of-bounds reads or writes in key translation functions. This can lead to information disclosure or crashes.

Detection Guidance

This vulnerability involves a remote unauthenticated Deskflow server sending malicious options to trigger out-of-bounds memory access. Detection requires monitoring Deskflow server logs for unusual option values or crashes. Check Deskflow version; if below 1.26.0.299, the system is vulnerable. No specific commands are provided in the context.

Impact Analysis

An attacker could exploit this to crash your Deskflow client or potentially read sensitive memory from your system. Since Deskflow shares keyboard and mouse input, this could disrupt your workflow or expose data processed by the client.

Mitigation Strategies

Upgrade Deskflow to continuous build 1.26.0.299 or later to patch the vulnerability. If upgrading is not immediately possible, restrict network access to the Deskflow server to trusted sources only.

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