DEBIAN-CVE-2026-48689: fastnetmon security update

DEBIAN-CVE-2026-48689, released June 24, 2026, fixes 1 CVE in fastnetmon. None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent

CVEs closed

1 rated Critical

Exploited

None reported

Highest CVSS

9.8

Base score, 0 to 10

Highest EPSS

0.0068

52nd percentile

Fixed package versions

Product	Release	Fixed in
fastnetmon	Debian 13.5 (trixie)	1.2.9-0+deb13u1
fastnetmon	Debian 14	1.2.9-1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Urgent	CVE-2026-48689	fastnetmon: FastNetMon Community Edition through 1.2.9 contains an off-by-one heap-based buffer overflow in the dynamic_binary_bu...	9.8	0.0068	None reported

Also fixes CVE-2026-48689

fastnetmon 1.2.6-1ubuntu0.1~esm1
fastnetmon on Ubuntu 24.04.5 LTS (noble)
fastnetmon 1.2.8+git20250911-2ubuntu0.1~esm1
fastnetmon on Ubuntu 26.04.1 LTS (resolute)

Vendor advisory

https://security-tracker.debian.org/tracker/CVE-2026-48689

For tools and AI agents

This page as data: JSON · Markdown

Link to this page

If this page saved you time, a link to it in your ticket, advisory or write-up helps others find it.

HTML

<a href="https://patchblox.com/security/fix/linux/debian-cve-2026-48689">DEBIAN-CVE-2026-48689 on Patchblox Patch Radar</a>

Reusing the data? How to credit Patch Radar.

Which servers are still behind?

Patchblox compares the installed package on every Linux machine against the fixed version for its release, including machines reported through Azure Update Manager.

Get a demo

Patch Radar data is free to use with attribution. Terms and how to credit it.

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.