RT-Labs P-Net up to 1.0.3 denial of service

Summaryinfo

A vulnerability has been found in RT-Labs P-Net up to 1.0.3 and classified as problematic. Affected by this vulnerability is an unknown functionality. This manipulation causes denial of service. This vulnerability is handled as CVE-2026-127124. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic was found in RT-Labs P-Net up to 1.0.3. Affected by this vulnerability is an unknown part. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

P-Net before 1.0.4 keeps the RPC session that is allocated for a fragment of a request with an unknown activity UUID, without a timeout, when the rest of the request never arrives. A session that does not get an Application Relationship is also kept after the response. Repeated fragments or requests with different activity UUIDs exhaust the available sessions, one UDP packet per session. Once they are exhausted the device no longer answers a Connect request until it is restarted. An unauthenticated attacker with ADJACENT network access can use this to cause a denial of service.

The advisory is shared at rt-labs.com. This vulnerability is known as CVE-2026-127124 since 11/12/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading to version 1.0.4 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• RT-Labs

Name

• P-Net

Version

• 1.0.0
• 1.0.1
• 1.0.2
• 1.0.3

CPE 2.3info

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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