CVE-2026-92693

FastNetMon is a high-performance DDoS detector and sensor. In version 1.2.9 and earlier, parse_raw_packet_to_simple_packet_full() in src/simple_packet_parser_ng.cpp dereferences ipv6_extension_header_fragment_t when IpProtocolNumberIPV6_FRAG is present without first verifying that the eight-byte Fragment header remains. A crafted sFlow v5 RAW_PACKET_HEADER record can remotely reach this shared parser with the Fragment bytes omitted, causing an unauthenticated remote out-of-bounds read. The supplied harness detects the read under AddressSanitizer, but the advisory does not establish a production process crash. No fixed release is available as of this review.

• CWE-125

• https://github.com/pavel-odintsov/fastnetmon/commit/1da80df73620c6d0aa4462e9611e65047529b12a
• https://github.com/pavel-odintsov/fastnetmon/security/advisories/GHSA-jmjw-392h-4g93
• https://github.com/pavel-odintsov/fastnetmon/security/advisories/GHSA-jmjw-392h-4g93

Published

Nov 5, 2026

Last Modified

Nov 6, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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