CVE-2026-111730
Out-of-bounds write in CheckPeers block parser due to unvalidated peer station name length
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.
INFO
Published Date :
Oct. 29, 2026, 4:17 p.m.
Last Modified :
Oct. 29, 2026, 4:26 p.m.
Remotely Exploit :
No
Source :
4b71179a-3b92-4a9d-b9fc-af8b8ed579ee
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | HIGH | 4b71179a-3b92-4a9d-b9fc-af8b8ed579ee | ||||
| CVSS 4.0 | HIGH | 4b71179a-3b92-4a9d-b9fc-af8b8ed579ee |
Solution
- Update P-Net to version 1.0.3 or later.
- Apply vendor patches to address memory corruption.
- Restrict network access to adjacent networks.
- Validate input lengths rigorously.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-111730.
| URL | Resource |
|---|---|
| https://rt-labs.com/wp-content/uploads/2026/10/RRTL-261019-01.pdf |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-111730 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-111730
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-111730 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-111730 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 4b71179a-3b92-4a9d-b9fc-af8b8ed579ee
Oct. 29, 2026
Action Type Old Value New Value 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. Added CVSS V4.0 AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-787 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/111xxx/CVE-2026-111730.json">CVE-2026-111730</a> Added Reference https://rt-labs.com/wp-content/uploads/2026/10/RRTL-261019-01.pdf