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.
History

Tue, 28 Apr 2026 16:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:deskflow:deskflow:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}


Tue, 28 Apr 2026 09:45:00 +0000

Type Values Removed Values Added
First Time appeared Deskflow
Deskflow deskflow
Vendors & Products Deskflow
Deskflow deskflow

Fri, 24 Apr 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 24 Apr 2026 20:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Deskflow: clipboard deserialization global-buffer-overflow
Weaknesses CWE-120
References
Metrics cvssV4_0

{'score': 7.4, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-04-24T19:47:45.316Z

Updated: 2026-04-24T20:15:40.568Z

Reserved: 2026-04-20T16:14:19.005Z

Link: CVE-2026-41476

cve-icon Vulnrichment

Updated: 2026-04-24T20:15:35.780Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-24T20:16:28.207

Modified: 2026-04-28T15:47:41.563

Link: CVE-2026-41476

cve-icon Redhat

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