Vulnerability Description
P-Net before 1.0.3 contains an integer underflow in pf_cpm_c_data_ind(). When handling a received cyclic data frame while the consumer is in the FRUN or RUN state, the offset of the APDU status was computed as the frame length minus 4 using 16-bit arithmetic, without checking that the frame is long enough. A crafted short frame makes the offset wrap around, so the function reads outside the receive buffer. This can cause a crash (denial of service) or disclose memory content.
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-111735?
CVE-2026-111735 is a documented vulnerability. P-Net before 1.0.3 contains an integer underflow in pf_cpm_c_data_ind(). When handling a received cyclic data frame while the consumer is in the FRUN or RUN state, the offset of the APDU status was co...
How severe is CVE-2026-111735?
CVSS scoring is not yet available for CVE-2026-111735. Check NVD for updates.
Is there a patch for CVE-2026-111735?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.