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CVE-2026-48686

—
CVSS 3.1
9.8 critical
EPSS
<1%p45
Published
()
Modified
Description

FastNetMon Community Edition through 1.2.9 contains a stack-based buffer overflow in the BGP NLRI (Network Layer Reachability Information) decoder. The function decode_bgp_subnet_encoding_ipv4_raw() in src/bgp_protocol.cpp reads prefix_bit_length directly from the BGP packet (line 99) without validating it is 32 causes undefined behavior.

Vendors
pavel-odintsov
Products
fastnetmon
Weakness
CWE-120, CWE-787
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD CVE.org GitHub PoCs EPSS (0.6%)

In the news

No ingested article mentions this CVE yet.