{"affected":[{"product":"fastnetmon","source":"CNA: GitHub_M","vendor":"pavel-odintsov","versions":[{"status":"affected","version":"<= 1.2.9"}]}],"cveId":"CVE-2026-92698","cwes":["CWE-125"],"description":"FastNetMon is a high-performance DDoS detector and sensor. In version 1.2.9 and earlier, process_sflow_flow_sample() in src/sflow_plugin/sflow_collector.cpp passes the attacker-controlled sflow_raw_protocol_header_t.header_size to parse_raw_packet_to_simple_packet_full() as its trusted captured length without comparing it with the bytes remaining in the record. An inflated header_size creates a false end pointer beyond the received sFlow v5 UDP buffer, defeating the nested parser's bounds checks and causing an unauthenticated remote out-of-bounds read and process crash, with possible limited exposure of adjacent bytes through parsed flow fields. No fixed release is available as of this review.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":8.2,"severity":"high","source":"CNA: GitHub_M","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","version":"3.1"}],"modifiedAt":1793918158969,"publishedAt":1793918158969,"references":[{"source":"CNA: GitHub_M","tags":["x_refsource_CONFIRM"],"url":"https://github.com/pavel-odintsov/fastnetmon/security/advisories/GHSA-852r-3wcv-pjx2"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/pavel-odintsov/fastnetmon/pull/1089"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/pavel-odintsov/fastnetmon/pull/1093"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/pavel-odintsov/fastnetmon/commit/6871b7383322db14405a8de1399a83da15ef3533"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/pavel-odintsov/fastnetmon/commit/be81c403b9aa891f8444a6379cd4a4fbbc324a83"}],"remediation":[],"revision":"dc5faab9199f1455f3a6839e0d689396db233bb51714ec89fc88a3edf1750e7c","sources":[{"modifiedAt":1793918158969,"name":"CNA: GitHub_M","retrievedAt":1793920191234,"url":"https://www.cve.org/CVERecord?id=CVE-2026-92698"}],"ssvc":null,"status":"published","title":"FastNetMon: sFlow header_size field trusted as parser capture length causes remote out-of-bounds read","updatedAt":1793920191234}