CVE-2026-41476

Deskflow: clipboard deserialization global-buffer-overflow

HIGH
8.8
CVSS Score
Published: April 24, 2026 at 07:47 PM UTC
Updated: June 17, 2026 at 10:46 AM UTC
1 product affected across 1 vendorDeskflow

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Severity
HIGH8.8
Exploit prediction
EPSS 0.3%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.26.0.138
Affected range stops below 1.26.0.138, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

x_refsource_CONFIRMExploitVendor Advisory
Source: cverecord
https://github.com/deskflow/deskflow/security/advisories/GHSA-3jp5-g964-cgmh

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-120

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