CVE-2026-111731

Infinite loop when reading PDPortDataCheck record of subslot 0

Published Oct 29, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Description
P-Net before 1.0.3 enters an infinite loop when handling a read request for the PDPortDataCheck record with subslot 0 (whole module). The loop over the ports never advanced to the next port, so the request never completes and the device stops responding. A remote unauthenticated attacker can use this to cause a denial of service.

Remediation

Vendor Solution

Upgrade to P-Net 1.0.3 or later.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Rt-labs
Rt-labs p-net
Vendors & Products Rt-labs
Rt-labs p-net
Type Values Removed Values Added
Description P-Net before 1.0.3 enters an infinite loop when handling a read request for the PDPortDataCheck record with subslot 0 (whole module). The loop over the ports never advanced to the next port, so the request never completes and the device stops responding. A remote unauthenticated attacker can use this to cause a denial of service.
Title Infinite loop when reading PDPortDataCheck record of subslot 0
Weaknesses CWE-835
References
Metrics cvssV4_0

{'score': 8.7, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
rt-labs
Published
Updated
Nov 5, 2026, 9:21 PM
Reserved
Oct 16, 2026, 3:49 PM
Status
Deferred
Published
Oct 29, 2026, 4:17 PM
Modified
Nov 5, 2026, 10:17 PM