CVE-2026-111735
P-Net before 1.0.3 contains an integer underflow in pf_cpm_c_data_ind()
- Risk score
- 43/100
- CVSS
- 7.1 v4.0
- Published
- 29 Oct 2026
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What to know
- What it is
- 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 s…
- Affected
- See advisory
- Fix
- Upgrade the product to 1.0.3 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 7.1 high
References
Original 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.
Last activity 29 Oct 2026. Patch Forecast updates every hour.