CVE-2026-48694

Name	CVE-2026-48694
Description	FastNetMon Community Edition through 1.2.9 contains a configuration injection vulnerability in the Juniper router integration plugin. In src/juniper_plugin/fastnetmon_juniper.php, the $IP_ATTACK variable (received from argv[1]) is directly interpolated into Juniper NETCONF set-configuration commands at lines 69 and 90 without any validation or sanitization. Line 69: $conn->load_set_configuration("set routing-options static route {$IP_ATTACK} community 65535:666 discard"). Line 90: $conn->load_set_configuration("delete routing-options static route {$IP_ATTACK}/32"). An attacker who can control the IP address string can inject additional Juniper CLI configuration commands by embedding newline characters followed by arbitrary set/delete commands. This could modify the router's routing table, firewall filters, user accounts, or any other configuration element accessible via NETCONF. The impact is full router compromise.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1138646

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
fastnetmon (PTS)	bookworm, bookworm (security)	1.2.4-2+deb12u1	vulnerable
	trixie	1.2.8-1	vulnerable
	forky, sid	1.2.9-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
fastnetmon	source	(unstable)	1.2.9-1	unimportant		1138646

Notes

https://lorikeetsecurity.com/blog/fastnetmon-cve-2026-48694-juniper-netconf-injection
Crosses no meaningful security boundary
https://github.com/pavel-odintsov/fastnetmon/pull/1049
https://github.com/pavel-odintsov/fastnetmon/commit/6f58184fb60248df011c4c379bf445e07609ad27 (v1.2.9)