CVE-2026-111732: RT-Labs P-Net · Out-of-bounds Write
Affects RT-Labs P-NetSource CVE Database V5
Not known to be exploited · CVSS 9.3 Critical : upgrade to 1.0.3 as a priority.
Data as of 29 Oct 2026, 16:53 UTC
Thin evidence
One scorer or none| CNA (rt-labs) | CVSS 4.0 | 9.3 |
|---|
- Patch
- Available – fixed in 1.0.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 29 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 29 Oct 2026.
What to do
Upgrade RT-Labs P-Net to 1.0.3.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| RT-LabsP-Net | Affected
| Fixed in
|
AI-suggested
Upgrade RT-Labs P-Net to version 1.0.3 or later, where this vulnerability is fixed. Note that the vulnerable code path requires the PNET_OPTION_AR_VENDOR_BLOCKS option to be enabled, which is disabled by default. If this option is not enabled, the vulnerability is not exploitable. No other mitigations are specified.
Description
CVE-2026-111732 is a critical out-of-bounds write vulnerability in RT-Labs P-Net versions before 1.0.3 when built with the PNET_OPTION_AR_VENDOR_BLOCKS option enabled. The vulnerability arises because the software parses a data length from a field in the ARVendorBlock request that is not defined as part of the block and uses this length to copy data into a fixed-size buffer without proper bounds checking. This can be triggered by a crafted Connect request, potentially causing a crash or arbitrary code execution. The vulnerable option is disabled by default.