CVE-2025-32900

Device impersonation via unauthenticated UDP discovery packets

Published Dec 5, 2025 · Updated Dec 5, 2025

Use of a less trusted source in the KDE Connect protocol before 2025-04-18 allows attackers to spoof device information. Discovery handlers accept unauthenticated broadcast UDP packets containing a claimed device ID, name, and type, then replace the displayed data until a legitimate announcement arrives. An attacker must share the target's network; the false identity can confuse a user into pairing with the wrong device, without reported data disclosure or service interruption.

CVSS severity4.3
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Use of a less trusted source in the KDE Connect protocol before 2025-04-18 allows attackers to spoof device information. Discovery handlers accept unauthenticated broadcast UDP packets containing a claimed device ID, name, and type, then replace the displayed data until a legitimate announcement arrives. An attacker must share the target's network; the false identity can confuse a user into pairing with the wrong device, without reported data disclosure or service interruption.

The record

CVE
CVE-2025-32900
Published
Dec 5, 2025
Updated
Dec 5, 2025
Vendor
KDE
Product
KDE Connect information-exchange protocol
Classifications
CWE-348, T1036
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 5, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 5, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <2025-04-18

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

KDE · KDE Connect information-exchange protocolversion=0 <2025-04-18

Published CVSS scores

4.3MITRECVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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

Weakness, pattern, technique

CWE-348Use of Less Trusted Source
T1036Masquerading

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo