CVE-2026-92698: pavel-odintsov fastnetmon · Out-of-bounds Read
Affects pavel-odintsov fastnetmonSource CVE Database V5
Not known to be exploited · CVSS 8.2 High.
Data as of 5 Nov 2026, 22:48 UTC
Thin evidence
One scorer or none| CNA (GitHub_M) | CVSS 3.1 | 8.2 |
|---|
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 5 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| pavel-odintsovfastnetmon | Affected
| Fixed in– |
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.
References
- github.com/pavel-odintsov/fastnetmon/security/advisories/GHSA-852r-3wcv-pjx2 (opens in a new tab)
- github.com/pavel-odintsov/fastnetmon/pull/1089 (opens in a new tab)
- github.com/pavel-odintsov/fastnetmon/pull/1093 (opens in a new tab)
- github.com/pavel-odintsov/fastnetmon/commit/6871b7383322db14405a8de1399a83da15ef3533 (opens in a new tab)
- github.com/pavel-odintsov/fastnetmon/commit/be81c403b9aa891f8444a6379cd4a4fbbc324a83 (opens in a new tab)