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VulnerabilityPublished

CVE-2026-124762: RT-Labs P-Net · Origin Validation Error

Affects RT-Labs P-NetSource CVE Database V5

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Not known to be exploited · CVSS 6.0 Medium : upgrade to 1.0.4 when convenient.

Data as of 13 Nov 2026, 13:38 UTC

CVSS 4.0 base score
6.0Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (rt-labs)CVSS 4.06.0
Patch
Available – fixed in 1.0.4
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

Upgrade RT-Labs P-Net to 1.0.4.

Affected software

ProductAffectedFixed in
RT-LabsP-NetAffected
  • <1.0.4
  • >=1.0.4
Fixed in
  • 1.0.4

AI-suggested

Upgrade RT-Labs P-Net to version 1.0.4 or later, where this origin validation vulnerability is fixed. No other specific mitigations are indicated. Since this is a software vulnerability with an official fix, applying the patch is the recommended remediation.

Description

CVE-2026-124762 is a vulnerability in RT-Labs P-Net versions before 1.0.4 where the system improperly validates the origin of RPC session PDUs. The software identifies RPC sessions solely by activity UUIDs sent in cleartext, allowing an adjacent network attacker who has observed these UUIDs to abort an Application Relationship by sending a single PDU. Additionally, the vulnerability allows allocation of sessions for unknown activity UUIDs and modification of stored session addresses. This flaw was fixed in version 1.0.4.

References

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