CVE-2026-41476Public exploitNetwork attack vector

Authenticated peer crash via unchecked clipboard length

Published Apr 24, 2026 · Updated Apr 24, 2026

Out-of-bounds read in Deskflow before 1.26.0.138 allows remote authenticated users to crash a peer via malformed clipboard traffic. IClipboard::unmarshall() constructs a string from a peer-supplied payload size without checking that the declared length fits the remaining serialized blob. Exploitation requires an established malicious or compromised peer with clipboard sharing enabled; adjacent process data can also enter clipboard state.

CVSS severity8.8
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Deskflow before 1.26.0.138 allows remote authenticated users to crash a peer via malformed clipboard traffic. IClipboard::unmarshall() constructs a string from a peer-supplied payload size without checking that the declared length fits the remaining serialized blob. Exploitation requires an established malicious or compromised peer with clipboard sharing enabled; adjacent process data can also enter clipboard state.

The record

CVE
CVE-2026-41476
Published
Apr 24, 2026
Updated
Apr 24, 2026
Vendor
Deskflow
Product
Deskflow
Classifications
CWE-120, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.26.0.138

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Deskflow · Deskflowversion=< 1.26.0.138

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.4GitHub, Inc.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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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