{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-111735","assignerOrgId":"4b71179a-3b92-4a9d-b9fc-af8b8ed579ee","state":"PUBLISHED","assignerShortName":"rt-labs","dateReserved":"2026-10-16T15:50:17.803Z","datePublished":"2026-10-29T15:42:29.115Z","dateUpdated":"2026-10-29T15:42:29.115Z"},"containers":{"cna":{"providerMetadata":{"orgId":"4b71179a-3b92-4a9d-b9fc-af8b8ed579ee","shortName":"rt-labs","dateUpdated":"2026-10-29T15:42:29.115Z"},"title":"Integer underflow leads to out-of-bounds read in pf_cpm_c_data_ind()","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-191","description":"CWE-191 Integer Underflow (Wrap or Wraparound)","type":"CWE"},{"lang":"en","cweId":"CWE-125","description":"CWE-125 Out-of-bounds Read","type":"CWE"}]}],"affected":[{"vendor":"RT-Labs","product":"P-Net","versions":[{"status":"affected","version":"0","lessThan":"1.0.3","versionType":"semver"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"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.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>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.</p>"}]}],"references":[{"url":"https://rt-labs.com/wp-content/uploads/2026/10/RRTL-261019-01.pdf","name":"Cybersecurity advisory for P-Net"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"ADJACENT","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"HIGH","baseScore":7.1,"vectorString":"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"}}],"solutions":[{"lang":"en","value":"Upgrade to P-Net 1.0.3 or later.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>Upgrade to P-Net 1.0.3 or later.</p>"}]}],"source":{"discovery":"UNKNOWN"}}}}