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CVE-2026-48695

8.1 HIGH

FastNetMon Community Edition through 1.2.9 contains an OS command injection vulnerability in the MikroTik router integration plugin

Published: 2026-05-26 · Last updated: 2026-05-27

Severity and scoring

CVSS
8.1 HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE
CWE-78

Affected products

VendorProduct
pavel-odintsovfastnetmon

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().

Source: NVD

References

Related CVEs

Same vendor

  • CVE-2026-48689 — FastNetMon Community Edition through 1.2.9 contains an off-by-one heap-based buffer overflow in the dynamic_binary_buffer_t class (src/dy... (9.8 CRITICAL)
  • CVE-2026-48696 — FastNetMon Community Edition through 1.2.9 has a buffer overflow, a different vulnerability than CVE-2026-48686 and CVE-2026-48689 (6.2 MEDIUM)
  • CVE-2026-48694 — FastNetMon Community Edition through 1.2.9 contains a configuration injection vulnerability in the Juniper router integration plugin (8.1 HIGH)
  • CVE-2026-48697 — FastNetMon Community Edition through 1.2.9 does not verify TLS certificates on outbound HTTPS connections (7.4 HIGH)
  • CVE-2026-48693 — FastNetMon Community Edition through 1.2.9 is vulnerable to a local symlink attack via predictable file paths in /tmp (5.5 MEDIUM)

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