What is CVE-2026-48685?

CVE-2026-48685 is a medium-severity vulnerability in Pavel-odintsov Fastnetmon, classified under Improper Handling of Length Parameter Inconsistency. CVSS score: 6.5/10. Published 2026-05-26.

How severe is CVE-2026-48685?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Pavel-odintsov Fastnetmon

CVE-2026-48685

FastNetMon Community Edition through 1.2.9 has out-of-bounds memory access because it incorrectly parses BGP path attributes with the extended length flag set. In src/bgp_protocol.hpp, the parse_raw_bgp_attribute() function correctly ident…

EPSS: 0.000 (13.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Pavel-odintsov Fastnetmon
N/a — versions n/a

Weakness classification (CWE)

CWE-130 — Improper Handling of Length Parameter Inconsistency

References

cve@mitre.org (Product)
cve@mitre.org (Product)
cve@mitre.org (Third Party Advisory)

Frequently asked questions

What is CVE-2026-48685?: CVE-2026-48685 is a medium-severity vulnerability in Pavel-odintsov Fastnetmon, classified under Improper Handling of Length Parameter Inconsistency. CVSS score: 6.5/10. Published 2026-05-26.
How severe is CVE-2026-48685?: Medium severity. CVSS v3 base score is 6.5 out of 10.