High · CVSS 8.2CVE-2026-92695

FastNetMon: Legacy pcap parse_packet() has no bounds checking, causing out-of-bounds read on truncated framesCVE-2026-92695

Answer in brief

CVE-2026-92695 records a High severity (CVSS 8.2) vulnerability in FastNetMon: Legacy pcap parse_packet() has no bounds checking, causing out-of-bounds read on truncated frames. The current sources do not mark it as known exploited. The current feed maps pavel-odintsov/fastnetmon (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 5, 2026Updated Nov 5, 2026Source checked Nov 5, 2026First seen by HOL Nov 5, 2026Material review Nov 5, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.2
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 8.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps pavel-odintsov/fastnetmon (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
pavel-odintsov/fastnetmongeneric	<=1.2.9	= 1.2.9

Recommended response

Check inventory. Check lockfiles and deployed manifests for pavel-odintsov/fastnetmon.
Review the reported fix. Update pavel-odintsov/fastnetmon to = 1.2.9 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Nov 5, 2026

Sources and claim methodology

Upstream source description

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 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.

Quoted source text, attributed separately from HOL analysis.