How severe is CVE-2026-41476?

CVE-2026-41476 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-41476 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-41476?

CVE-2026-41476 affects Deskflow. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-41476?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-41476 have an EU (EUVD) identifier?

Yes. CVE-2026-41476 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25622.

When was CVE-2026-41476 published?

CVE-2026-41476 was published on 2026-04-24 and last updated on 2026-06-17.

CVE-2026-41476

CVE-2026-41476 is a high-severity vulnerability in Deskflow with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 7.4
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-25622
Weakness: CWE-120
Affected product: Deskflow
Published: 2026-04-24
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-41476?: 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.
How severe is CVE-2026-41476?: CVE-2026-41476 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-41476 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-41476?: CVE-2026-41476 affects Deskflow. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-41476?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-41476 have an EU (EUVD) identifier?: Yes. CVE-2026-41476 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25622.
When was CVE-2026-41476 published?: CVE-2026-41476 was published on 2026-04-24 and last updated on 2026-06-17.

References

https://github.com/deskflow/deskflow/security/advisories/GHSA-3jp5-g964-cgmh

Affected products (1)

cpe:2.3:a:deskflow:deskflow:*:*:*:*:*:*:*:*

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