FastNetMon Community Edition through 1.2.9 contains an OS command injection vulnerability in the MikroTik router integration plugin. The _log() function in src/mikrotik_plugin/fastnetmon_mikrotik.php (lines 107-108) constructs shell commands by concatenating the $msg parameter directly into exec() calls: exec("echo `date` \"- {FASTNETMON] - " . $msg . " \" >> " . $FILE_LOG_TMP). This is identical in pattern to the Juniper plugin vulnerability. The $msg variable contains unsanitized attack data from command-line arguments. An attacker who can influence argv[] values can inject arbitrary shell commands. The fix is to replace exec() with file_put_contents() or use escapeshellarg().

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History

Tue, 26 May 2026 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Pavel-odintsov
Pavel-odintsov fastnetmon
Vendors & Products Pavel-odintsov
Pavel-odintsov fastnetmon
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 26 May 2026 20:15:00 +0000

Type Values Removed Values Added
Title FastNetMon Community Edition MikroTik Plugin OS Command Injection
Weaknesses CWE-78

Tue, 26 May 2026 18:00:00 +0000

Type Values Removed Values Added
Description FastNetMon Community Edition through 1.2.9 contains an OS command injection vulnerability in the MikroTik router integration plugin. The _log() function in src/mikrotik_plugin/fastnetmon_mikrotik.php (lines 107-108) constructs shell commands by concatenating the $msg parameter directly into exec() calls: exec("echo `date` \"- {FASTNETMON] - " . $msg . " \" >> " . $FILE_LOG_TMP). This is identical in pattern to the Juniper plugin vulnerability. The $msg variable contains unsanitized attack data from command-line arguments. An attacker who can influence argv[] values can inject arbitrary shell commands. The fix is to replace exec() with file_put_contents() or use escapeshellarg().
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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-05-26T20:17:41.811Z

Reserved: 2026-05-22T00:00:00.000Z

Link: CVE-2026-48695

cve-icon Vulnrichment

Updated: 2026-05-26T20:16:15.931Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-05-26T18:16:52.950

Modified: 2026-05-26T21:16:43.860

Link: CVE-2026-48695

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-26T21:15:16Z

Weaknesses