Quick answers
- Is CVE-2026-92698 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-92698 being exploited in the wild.
- How severe is CVE-2026-92698?
- High severity, with a CVSS score of 8.2, published 5 November 2026.
- Which products and versions are affected?
- Pavel-Odintsov Fastnetmon 1.2.9 and earlier.
- Is there a fix for CVE-2026-92698?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-92698 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-92698?
- Check whether you run Pavel-Odintsov Fastnetmon at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is an out-of-bounds read in process_sflow_flow_sample() in sflow_collector.cpp. An attacker-controlled header_size field in an sFlow v5 UDP packet is passed directly to parse_raw_packet_to_simple_packet_full() without validating it against the remaining buffer bytes, allowing an inflated header_size to create a false end pointer that bypasses nested bounds checks. This requires an unauthenticated remote attacker to send a malformed sFlow packet, triggering a crash and potential memory disclosure through parsed flow fields.
Affected products
- Pavel Odintsov FastNetMon 1.2.9 and earlier
Timeline
- 2026-11-05: disclosed