{"id":"CVE-2026-111735","aliases":["EUVD-2026-113009","GHSA-pmgf-c5w3-wm94"],"status":"published","title":"Integer underflow leads to out-of-bounds read in pf_cpm_c_data_ind()","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.","severity":{"version":"4.0","score":7.1,"vector":"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00165,"percentile":0.05769,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125","CWE-191"],"published":"2026-10-29T15:42:29Z","modified":"2026-11-05T21:23:14Z","products":[{"vendor":"rt-labs","product":"p-net"}],"references":[{"url":"https://rt-labs.com/wp-content/uploads/2026/10/RRTL-261019-01.pdf"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111735"},{"url":"https://github.com/advisories/GHSA-pmgf-c5w3-wm94"}],"sources":{"cve":[{"id":"CVE-2026-111735","title":"Integer underflow leads to out-of-bounds read in pf_cpm_c_data_ind()","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.","status":"published","published":"2026-10-29T15:42:29.115Z","modified":"2026-11-05T21:23:14.959Z","cvss":[{"version":"4.0","score":7.1,"vector":"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","level":"high","assessor":"cna"}],"cwes":["CWE-191","CWE-125"],"updated_at":"2026-11-05T22:55:19.167207Z"}],"euvd":[{"id":"EUVD-2026-113009","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.","status":"published","published":"2026-10-29T15:42:29Z","modified":"2026-11-05T21:23:14Z","cvss":[{"version":"4.0","score":7.1,"vector":"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","level":"high"}],"updated_at":"2026-11-05T22:02:07.885196Z"}],"ghsa":[{"id":"GHSA-pmgf-c5w3-wm94","title":"P-Net before 1.0.3 contains an integer underflow in pf_cpm_c_data_ind(). When handling a received...","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.","status":"published","published":"2026-10-29T18:30:53Z","modified":"2026-10-29T18:30:54Z","cvss":[{"version":"4.0","score":7.1,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:14:39.34849Z"}],"nvd":[{"id":"CVE-2026-111735","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.","status":"published","published":"2026-10-29T16:17:57.833Z","modified":"2026-11-05T22:17:45.18Z","cvss":[{"version":"4.0","score":7.1,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"}],"cwes":["CWE-125","CWE-191"],"updated_at":"2026-11-05T23:57:22.428307Z"}]}}