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TI-2026-82631 Aliases CVE-2026-112200GHSA-8v8r-4p24-rjmp

Resource exhaustion in RT-Labs P-Net from unreleased RPC sessions

Priority LOW 38CWE-772Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-772.

Summary

P-Net before 1.0.3 from RT-Labs does not release the Application Relationship (AR) and the RPC session when an RPC request is rejected because its data representation has incorrect endianness. Repeated requests exhaust the available sessions, and the device then stops answering new RPC requests, including Connect, until it is restarted (CWE-772). A remote unauthenticated attacker can cause a denial of service.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00414 35th percentileScored 2026-11-07
Fix Fixed P-Net (RT-Labs): 1.0.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
RT-LabsP-Netbefore 1.0.31.0.3Patch availableCNA
  • P-Net VendorRT-Labs Affected before 1.0.3 Fixed in 1.0.3 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:rt-labs:p-net:*:*:*:*:*:*:*:*——RT-Labs
  • cpe:2.3:a:rt-labs:p-net:*:*:*:*:*:*:*:* Versions — — ·RT-Labs

Remediation

Update RT-Labs P-Net to version 1.0.3 or later.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

  • Fix · CNA P-Net (RT-Labs) Fixed in 1.0.3

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    RT-Labs P-Net 1.0.3

    11 records Highest priority Priority MEDIUM 5 MEDIUM, 6 LOW

    Other records, highest priority first

    • TI-2026-82626 Out-of-bounds write when parsing AR Vendor Block requests in RT-Labs P-NetPriority MEDIUM 48
    • TI-2026-82632 Resource exhaustion from RPC sessions kept for unknown interface requestsPriority MEDIUM 44
    • TI-2026-82630 NULL pointer dereference in RT-Labs P-Net on implicit read requestsPriority MEDIUM 44
    Show all 11 records →

Timeline

  1. 2026-10-29 Threatist record created from CVE-2026-112200
  2. 2026-10-29 Alias added: GHSA-8v8r-4p24-rjmp
  3. 2026-10-31 Priority changed: MEDIUM → LOW
  4. 2026-11-05 CISA SSVC decision points changed

References

Other 1

  • TI-2026-82626 Out-of-bounds write when parsing AR Vendor Block requests in RT-Labs P-Net CVSS 4.0CRITICAL 9.3
  • TI-2026-82632 Resource exhaustion from RPC sessions kept for unknown interface requests CVSS 4.0HIGH 8.7
  • TI-2026-82630 NULL pointer dereference in RT-Labs P-Net on implicit read requests CVSS 4.0HIGH 8.7
  • TI-2026-82627 NULL pointer dereference in P-Net lets remote attackers crash devices CVSS 4.0HIGH 8.7
  • TI-2026-82625 Infinite loop in RT-Labs P-Net PDPortDataCheck record handling CVSS 4.0HIGH 8.7
  • TI-2025-23482 Out-of-bounds write in RT-Labs P-Net CVSS 3.1CRITICAL 9.8
See all 28 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences