216.73.216.6

CVE-2026-48687

· Published 26/05/2026 16:16 · Modified 27/05/2026 18:16

Labels: CVE-2026-48687 2026-05-26CVE-2026-48687CWE-78[email protected]

Essential information

Published
26/05/2026 16:16
Modified
27/05/2026 18:16
Author
Creator
CVSS
9.8 CRITICAL (v3.1)
CISA KEV
No
CWE
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS metrics

Description

FastNetMon Community Edition through 1.2.9 contains an OS command injection vulnerability in the Juniper router integration plugin. The _log() function in src/juniper_plugin/fastnetmon_juniper.php (lines 117-118) constructs shell commands by concatenating the $msg parameter directly into exec() calls: exec("echo `date` \"- {FASTNETMON] - " . $msg . " \" >> " . $FILE_LOG_TMP). The $msg variable contains unsanitized data derived from command-line arguments argv[1] through argv[3], which represent the attack IP address, direction, and power. While FastNetMon's C++ core currently passes IP addresses via inet_ntoa() (which only produces safe dotted-decimal notation), the PHP script performs no input validation or shell escaping. If the script is invoked directly, by another orchestration system, or if future code changes pass string-sourced IPs, arbitrary commands can be injected. The correct fix is to replace exec() with file_put_contents() or use escapeshellarg() on all parameters.

NVD status

Status
Modified — CVE has been recently published to the CVE List and has been received by the NVD.
Source
[email protected]
NVD
View on NVD

Affected products (CPE)

ProductCPE
pavel-odintsov / fastnetmon cpe:2.3:a:pavel-odintsov:fastnetmon:*:*:*:*:community:*:*:*

References