{"id":"CVE-2026-111730","title":"Out-of-bounds write in CheckPeers block parser due to unvalidated peer station name length","summary":"P-Net before 1.0.3 does not validate the LengthPeerStationName field of a CheckPeers block in get_check_peer(). The received length (up to 255) was used to copy data into the 241-byte peer station name buffer and to place the terminating…","severity":"high","cvss":7.2,"cvssVector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N","cvssSource":"cna","cwe":["CWE-787"],"vendor":"RT-Labs","product":"P-Net","affected":["P-Net < 1.0.3"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T21:20:27.161030Z"},"published":"2026-10-29","updated":"2026-11-05","sourceUpdated":"2026-11-05T21:20:34.521Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111730","references":[{"url":"https://rt-labs.com/wp-content/uploads/2026/10/RRTL-261019-01.pdf","label":"Cybersecurity advisory for P-Net"}],"tags":["cve.org"],"epss":0.00186,"epssPercentile":0.08248,"ingestedAt":"2026-11-01T20:00:16.967Z","slug":"CVE-2026-111730","body":"## Overview\n\nP-Net before 1.0.3 does not validate the LengthPeerStationName field of a CheckPeers block in get_check_peer(). The received length (up to 255) was used to copy data into the 241-byte peer station name buffer and to place the terminating NUL byte, so a crafted block writes up to 15 bytes past the end of the buffer. This can lead to a crash (denial of service) or potentially arbitrary code execution.\n\n\n\nRequires establishment of session that needs ADJACENT network access.\n\n## Affected\n\n- `P-Net < 1.0.3`\n\n## Remediation\n\nUpgrade to P-Net 1.0.3 or later.","depth":"twilight","depthScore":40,"depthScoreParts":{"impact":39.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}