CVE-2026-65976Public exploitNetwork attack vector

Memory exhaustion via unchecked clipboard chunk accumulation

Published Aug 17, 2026 · Updated Aug 18, 2026

Uncontrolled resource consumption in Deskflow before 1.26.0.300 allows attackers to exhaust memory via crafted clipboard chunk messages. ClipboardChunk::assemble() appends each remote DCLP DataChunk to the cached clipboard buffer without enforcing either the DataStart-declared size or the local clipboard receive limit, and it detects the mismatch only when DataEnd arrives. Any connected peer in an active Deskflow session can drive either the client or server receive path into unbounded allocation and service interruption; no data modification or disclosure is described.

CVSS severity6.5
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled resource consumption in Deskflow before 1.26.0.300 allows attackers to exhaust memory via crafted clipboard chunk messages. ClipboardChunk::assemble() appends each remote DCLP DataChunk to the cached clipboard buffer without enforcing either the DataStart-declared size or the local clipboard receive limit, and it detects the mismatch only when DataEnd arrives. Any connected peer in an active Deskflow session can drive either the client or server receive path into unbounded allocation and service interruption; no data modification or disclosure is described.

The record

CVE
CVE-2026-65976
Published
Aug 17, 2026
Updated
Aug 18, 2026
Vendor
Deskflow
Product
Deskflow
Classifications
CWE-400, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 18, 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=>= 1.17.0, < 1.26.0.300

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Deskflow · Deskflowversion=>= 1.17.0, < 1.26.0.300

Published CVSS scores

6.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499Endpoint Denial of Service

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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