RT-Labs P-Net up to 1.0.2 Application Alarm Callback buffer overflow

Summaryinfo

A vulnerability was found in RT-Labs P-Net up to 1.0.2. It has been rated as very critical. Affected is an unknown function of the component Application Alarm Callback. The manipulation leads to buffer overflow. This vulnerability is listed as CVE-2026-115794. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in RT-Labs P-Net up to 1.0.2 and classified as very critical. This issue affects an unknown function of the component Application Alarm Callback. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

P-Net before 1.0.3 passes the application alarm callback a data length derived from the variable part length field of a received RTA alarm frame without checking it against the length of the received frame. A short frame can make the callback receive a length of up to 65507 bytes. An application that copies the reported number of bytes reads past the end of the receive buffer. The attacker must have established an Application Relationship and requires ADJACENT network access. Applications that do not use the alarm data are not affected.

It is possible to read the advisory at rt-labs.com. The identification of this vulnerability is CVE-2026-115794 since 10/23/2026. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/29/2026).

Upgrading to version 1.0.3 eliminates this vulnerability.

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Productinfo

Vendor

• RT-Labs

Name

• P-Net

Version

• 1.0.0
• 1.0.1
• 1.0.2

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CPE 2.2info

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