cvedb.io
CVE-2026-48684
MEDIUM · CVSS 6.5
EPSS exploitation probability: 0%
Published 2026-05-26T16:16:26.440 · Last modified 2026-06-17T10:55:10.153

Summary

FastNetMon Community Edition through 1.2.9 contains an out-of-bounds read in the NetFlow v9 options template parser. In process_netflow_v9_options_template() (src/netflow_plugin/netflow_v9_collector.cpp), the scope parsing loop (lines 224-229) iterates until scopes_offset reaches the attacker-controlled option_scope_length value, reading netflow9_template_flowset_record_t structures at each step. No bounds check validates that (zone_address + scopes_offset + sizeof(record)) stays within the flowset. The same issue affects the options field loop (lines 241-257) with option_length. Furthermore, option_scope_length is not validated to be a multiple of sizeof(netflow9_template_flowset_record_t), potentially causing misaligned reads. An attacker can trigger reads past the end of the UDP packet

Affected products

pavel-odintsov — fastnetmon

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.