CVE-2025-32900VulnerabilityPublished 5 Dec 2025

CVE-2025-32900: KDE Connect information-exchange protocol · Use of Less Trusted Source

Affects KDE Connect information-exchange protocolSource CVE Database V5

Not known to be exploited · CVSS 4.3 Medium.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score

4.3Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Adjacent
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: Low
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Adjacent: The vulnerable component is bound to the network stack, but the attack is limited at the protocol level to a logically adjacent topology. This can mean an attack must be launched from the same shared physical (e.g., Bluetooth or IEEE 802.11) or logical (e.g., local IP subnet) network, or from within a secure or otherwise limited administrative domain (e.g., MPLS, secure VPN to an administrative network zone).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 5 Dec 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
KDE KDE Connect information-exchange protocol	Affected =0	Fixed in–

AI-suggested

To mitigate this vulnerability, European organizations should: 1) Update KDE Connect and related products (Valent, GSConnect) to the latest patched versions (Android ≥1.33.0, desktop ≥25.04, iOS ≥0.5, Valent ≥1.0.0.alpha.47, GSConnect ≥59) as soon as they become available. 2) Implement network segmentation and restrict broadcast traffic within local networks to limit exposure to untrusted devices. 3) Employ network monitoring to detect anomalous broadcast UDP packets that could indicate spoofing attempts. 4) Educate users about the risk of device information spoofing and encourage verification of device identities through alternative means when critical. 5) Consider disabling KDE Connect or related services on networks where device discovery is not essential or where security policies prohibit broadcast-based protocols. 6) Advocate for or contribute to enhancements in KDE Connect to incorporate stronger authentication or cryptographic validation of device information in future releases.

Description

In the KDE Connect information-exchange protocol before 2025-04-18, a packet can be crafted to temporarily change the displayed information about a device, because broadcast UDP is used. This affects KDE Connect before 1.33.0 on Android, KDE Connect before 25.04 on desktop, KDE Connect before 0.5 on iOS, Valent before 1.0.0.alpha.47, and GSConnect before 59.

Impact

For European organizations, the primary impact of CVE-2025-32900 is the potential for misinformation within local networks where KDE Connect or related products are deployed. This can lead to confusion or misidentification of devices, which may disrupt workflows relying on accurate device status or identity. While the vulnerability does not directly expose sensitive data or cause service disruption, it could be leveraged in targeted scenarios such as social engineering, network reconnaissance, or as part of a multi-stage attack chain. Organizations with high reliance on KDE Connect for device interoperability, especially in environments with many connected devices (e.g., enterprises, educational institutions, or public sector offices), may face increased risk. Since exploitation requires network proximity, the threat is more relevant in environments with shared or poorly segmented networks. The integrity compromise could also affect automated systems or scripts that depend on accurate device information, potentially leading to operational errors.

CWE-348Use of Less Trusted Source (opens in a new tab)
Base weakness
The product has two different sources of the same data or information, but it uses the source that has less support for verification, is less trusted, or is less resistant to attack.
OWASP Cheat Sheets
XML Security (opens in a new tab)
REST Security (opens in a new tab)
JSON Web Token for Java (opens in a new tab)
REST Assessment (opens in a new tab)
Cross-Site Request Forgery Prevention (opens in a new tab)
OWASP ASVS 4.0.3
V13.3.2 (opens in a new tab)
V3.5.3 (opens in a new tab)
V13.2.6 (opens in a new tab)
Attack patterns
Cache Poisoning (opens in a new tab)
DNS Cache Poisoning (opens in a new tab)
User-Controlled Filename (opens in a new tab)
Manipulating Web Input to File System Calls (opens in a new tab)
AJAX Footprinting (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 12 Dec 2025, 06:07 UTC

WeaknessesCWE-348

Technical details

References

Community reviews

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