P-Net before 1.0.3 does not validate the LengthPeerStationName field of a CheckPeers block in get_check_peer(). The received length (up to 255) was used to copy data into the 241-byte peer station name buffer and to place the terminating NUL byte, so a crafted block writes up to 15 bytes past the end of the buffer. This can lead to a crash (denial of service) or potentially arbitrary code execution.



Requires establishment of session that needs ADJACENT network access.

Project Subscriptions

Vendors Products
Rt-labs Subscribe
Advisories

No advisories yet.

Fixes

Solution

Upgrade to P-Net 1.0.3 or later.


Workaround

No workaround given by the vendor.

History

Thu, 29 Oct 2026 17:15:00 +0000

Type Values Removed Values Added
First Time appeared Rt-labs
Rt-labs p-net
Vendors & Products Rt-labs
Rt-labs p-net

Thu, 29 Oct 2026 15:45:00 +0000

Type Values Removed Values Added
Description P-Net before 1.0.3 does not validate the LengthPeerStationName field of a CheckPeers block in get_check_peer(). The received length (up to 255) was used to copy data into the 241-byte peer station name buffer and to place the terminating NUL byte, so a crafted block writes up to 15 bytes past the end of the buffer. This can lead to a crash (denial of service) or potentially arbitrary code execution. Requires establishment of session that needs ADJACENT network access.
Title Out-of-bounds write in CheckPeers block parser due to unvalidated peer station name length
Weaknesses CWE-787
References
Metrics cvssV4_0

{'score': 7.2, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: rt-labs

Published:

Updated: 2026-10-29T15:37:52.267Z

Reserved: 2026-10-16T15:49:17.919Z

Link: CVE-2026-111730

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-29T16:17:57.210

Modified: 2026-10-29T16:26:37.430

Link: CVE-2026-111730

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-29T17:00:12Z

Weaknesses