Vulnerability · Published Oct 29, 2026 · Assigned by rt-labs

CVE-2026-112200Resource exhaustion from unreleased AR and RPC session on RPC requests with incorrect endianness

High 8.7

In plain English

A high-severity security flaw in P-Net from RT-Labs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).

Severity (CVSS 4.0)8.7High

Exploit odds (30 days)0.4%top 64.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

P-Net before 1.0.3 does not release the Application Relationship (AR) and the RPC session when an RPC request is rejected because its data representation has incorrect endianness. The session and its AR remain allocated, so repeated requests exhaust the available sessions. Once they are exhausted the device no longer answers new RPC requests, including Connect, until it is restarted. A remote unauthenticated attacker can use this to cause a denial of service.

Affected products (as reported)

Vendor	Product	Versions
RT-Labs	P-Net	0 – before 1.0.3

Weakness: CWE-772 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

References

Cybersecurity advisory for P-Net