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().
References
Configurations
History
27 May 2026, 15:51
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Pavel-odintsov
Pavel-odintsov fastnetmon |
|
| CPE | cpe:2.3:a:pavel-odintsov:fastnetmon:*:*:*:*:community:*:*:* | |
| References | () https://github.com/pavel-odintsov/fastnetmon - Product | |
| References | () https://github.com/pavel-odintsov/fastnetmon/blob/master/src/mikrotik_plugin/fastnetmon_mikrotik.php - Product | |
| References | () https://lorikeetsecurity.com/blog/fastnetmon-cve-2026-48695-mikrotik-cmd-injection - Third Party Advisory |
26 May 2026, 21:16
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-78 | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 8.1 |
26 May 2026, 18:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-26 18:16
Updated : 2026-05-27 15:51
NVD link : CVE-2026-48695
Mitre link : CVE-2026-48695
CVE.ORG link : CVE-2026-48695
JSON object : View
Products Affected
pavel-odintsov
- fastnetmon
CWE
CWE-78
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')