CVE-2026-111732 Details
Description
P-Net before 1.0.3, when built with PNET_OPTION_AR_VENDOR_BLOCKS enabled, parses a data length from a field of the ARVendorBlock request that is not part of the block definition and uses it as the number of bytes to copy into a fixed-size buffer, without comparing it with the buffer size or the block length. A crafted Connect request causes an out-of-bounds write. This can lead to a crash (denial of service) or potentially arbitrary code execution. This option is disabled by default.
A vulnerability exists in P-Net versions prior to 1.0.3, when built with the AR Vendor Blocks option enabled. The issue arises because the software improperly parses a data length from a field in the ARVendorBlock request that is not defined within the block. This unvalidated length is then used to determine the number of bytes to copy into a fixed-size buffer, without any checks against the buffer size or the actual block length. As a result, a crafted Connect request can cause an out-of-bounds write, leading to a crash (denial-of-service) or potentially allowing arbitrary code execution.
Users are advised to upgrade to P-Net version 1.0.3 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 29, 2026CISA-ADP
Assessed Nov 5, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://rt-labs.com/wp-content/uploads/2026/10/RRTL-261019-01.pdf | 4b71179a-3b92-4a9d-b9fc-af8b8ed579ee | AdvisoryBundleRemedy |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-787 | Out-of-bounds Write | 4b71179a-3b92-4a9d-b9fc-af8b8ed579ee |
Affected Products
| Product | Versions |
|---|---|
| P-Net | < 1.0.3 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 5, 2026 | CVE Modified | CISA-ADP |
| Oct 29, 2026 | New CVE Received | 4b71179a-3b92-4a9d-b9fc-af8b8ed579ee |