CVE-2026-115793 PUBLISHED

Resource exhaustion from RPC sessions kept for requests to unknown interface

Assigner: rt-labs
Reserved: 23.10.2026 Published: 29.10.2026 Updated: 29.10.2026

P-Net before 1.0.3 does not release the RPC session allocated for an RPC request that names an unknown interface or object UUID, and does not start a timeout for it. Repeated requests with different activity UUIDs exhaust the available sessions. Once they are exhausted the device no longer answers new RPC requests, including Endpoint Mapper Lookup and Connect, until it is restarted. A remote unauthenticated attacker can use this to cause a denial of service.

Metrics

CVSS 4.0

CVSS 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
CVSS Score: 8.7

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	RT-Labs
Product	P-Net
Versions	Default: unaffected affected from 0 to 1.0.3 (excl.)

Solutions

Upgrade to P-Net 1.0.3 or later.

Credits

Aditya Gupta - adi0x90 finder

References

Cybersecurity advisory for P-Net

Problem Types

CWE-772 Missing Release of Resource after Effective Lifetime CWE