Deskflow up to 1.26.0.138 IClipboard.cpp ClipboardChunk::assemble buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability has been found in Deskflow up to 1.26.0.138 and classified as critical. This affects the function ClipboardChunk::assemble in the library src/lib/deskflow/IClipboard.cpp. Performing a manipulation results in buffer overflow. This vulnerability is known as CVE-2026-41476. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Deskflow up to 1.26.0.138. It has been classified as critical. This affects the function ClipboardChunk::assemble in the library src/lib/deskflow/IClipboard.cpp. The manipulation with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Deskflow is a keyboard and mouse sharing app. Prior to 1.26.0.138, a remote memory-safety vulnerability in Deskflow's clipboard deserialization allows a connected peer to trigger an out-of-bounds read by sending a malformed clipboard update. The issue is in the implementation of src/lib/deskflow/IClipboard.cpp. This is reachable because ClipboardChunk::assemble() in src/lib/deskflow/ClipboardChunk.cpp validates only the outer clipboard transfer size. It does not validate the internal structure of the serialized clipboard blob, so malformed inner lengths reach IClipboard::unmarshall() unchanged. This vulnerability is fixed in 1.26.0.138.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-41476 since 04/20/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 310293 (Linux Distros Unpatched Vulnerability : CVE-2026-41476), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.26.0.138 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (310293) and EUVD (EUVD-2026-25622). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 310293
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-41476

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Deskflow 1.26.0.138

Timelineinfo

04/20/2026 CVE reserved
04/24/2026 +4 days Advisory disclosed
04/24/2026 +0 days VulDB entry created
04/27/2026 +3 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-3jp5-g964-cgmh
Status: Confirmed

CVE: CVE-2026-41476 (🔒)
GCVE (CVE): GCVE-0-2026-41476
GCVE (VulDB): GCVE-100-359565
EUVD: 🔒

Entryinfo

Created: 04/24/2026 23:07
Updated: 04/27/2026 08:26
Changes: 04/24/2026 23:07 (68), 04/25/2026 00:53 (1), 04/27/2026 08:26 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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