Quick answers
- Is CVE-2026-111732 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-111732 being exploited in the wild.
- How severe is CVE-2026-111732?
- Informational severity, published 29 October 2026.
- Which products and versions are affected?
- RT-Labs P-Net before 1.0.3.
- Is there a fix for CVE-2026-111732?
- No fixed version is recorded yet. Ensure the PNET_OPTION_AR_VENDOR_BLOCKS compile option remains disabled unless vendor block support is explicitly required. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-111732 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-111732?
- Check whether you run RT-Labs P-Net at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
Ensure the PNET_OPTION_AR_VENDOR_BLOCKS compile option remains disabled unless vendor block support is explicitly required.
Technical details
The vulnerability is an out-of-bounds write in the ARVendorBlock request handler when PNET_OPTION_AR_VENDOR_BLOCKS is enabled (disabled by default). The parser reads a data length field from the request that is outside the block definition and uses this untrusted length value directly in a memory copy operation without validating it against the buffer size or block length, leading to a buffer overflow.
Affected products
- RT-Labs P-Net before 1.0.3
Timeline
- 2026-10-29: disclosed