{"id":"CVE-2026-92695","title":"FastNetMon: Legacy pcap parse_packet() has no bounds checking, causing out-of-bounds read on truncated frames","summary":"FastNetMon is a high-performance DDoS detector and sensor. In version 1.2.9 and earlier, the live parse_packet() callback in src/pcap_plugin/pcap_collector.cpp is registered through pcap_loop and processes captured frames when pcap = on …","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","cvssSource":"cna","cwe":["CWE-125"],"vendor":"pavel-odintsov","product":"fastnetmon","affected":["fastnetmon <= 1.2.9"],"published":"2026-11-05","updated":"2026-11-05","sourceUpdated":"2026-11-05T22:30:59.204Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-92695","references":[{"url":"https://github.com/pavel-odintsov/fastnetmon/security/advisories/GHSA-c27c-943r-vr8h","label":"https://github.com/pavel-odintsov/fastnetmon/security/advisories/GHSA-c27c-943r-vr8h"},{"url":"https://github.com/pavel-odintsov/fastnetmon/commit/5d0ee2d25fddb2db746ce4ce3326a589a2afef40","label":"https://github.com/pavel-odintsov/fastnetmon/commit/5d0ee2d25fddb2db746ce4ce3326a589a2afef40"}],"tags":["cve.org"],"ingestedAt":"2026-11-05T23:41:31.944Z","epss":0.00258,"epssPercentile":0.17574,"slug":"CVE-2026-92695","body":"## Overview\n\nFastNetMon is a high-performance DDoS detector and sensor. In version 1.2.9 and earlier, the live parse_packet() callback in src/pcap_plugin/pcap_collector.cpp is registered through pcap_loop and processes captured frames when pcap = on without checking packethdr->caplen. A short frame or an attacker-controlled IPv4 header length can make the parser dereference IP or transport headers beyond the captured bytes, causing an out-of-bounds read and process termination. No fixed release is available as of this review.\n\n## Affected\n\n- `fastnetmon <= 1.2.9`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}