CVE-2026-111735
Integer underflow leads to out-of-bounds read in pf_cpm_c_data_ind()
- State
- Published
- Severity
- 7.1 High
- Published
- Oct 29, 2026
- Updated
- Oct 29, 2026
- Reserved
- Oct 16, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.1 High | CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N | rt-labs |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
P-NetRT-Labs |
|
References
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