What is CVE-2026-48688?

CVE-2026-48688 is a high-severity vulnerability in Pavel-odintsov Fastnetmon, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-05-26.

How severe is CVE-2026-48688?

High severity. CVSS v3 base score is 7.5 out of 10.

Out-of-bounds Read in Pavel-odintsov Fastnetmon

CVE-2026-48688

FastNetMon Community Edition through 1.2.9 contains multiple out-of-bounds reads in the BGP MP_REACH_NLRI IPv6 attribute decoder. The function decode_mp_reach_ipv6() in src/bgp_protocol.cpp contains a TODO comment at line 156 explicitly ac…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (12.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

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

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

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

Frequently asked questions

What is CVE-2026-48688?: CVE-2026-48688 is a high-severity vulnerability in Pavel-odintsov Fastnetmon, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-05-26.
How severe is CVE-2026-48688?: High severity. CVSS v3 base score is 7.5 out of 10.