CVE-2026-48695Network attack vector

Authenticated command injection via MikroTik plugin logging

Published May 26, 2026 · Updated May 26, 2026

OS command injection in FastNetMon Community Edition 1.2.9 and earlier allows remote authenticated users to execute shell commands. The MikroTik integration plugin's _log() function concatenates the untrusted $msg command-line argument into an exec() shell command without escaping. Reachability requires low-privileged network access and control of an argument passed to the plugin; successful injection reads or alters host data under the plugin process's permissions.

CVSS severity8.1
High
EPSS probability1.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in FastNetMon Community Edition 1.2.9 and earlier allows remote authenticated users to execute shell commands. The MikroTik integration plugin's _log() function concatenates the untrusted $msg command-line argument into an exec() shell command without escaping. Reachability requires low-privileged network access and control of an argument passed to the plugin; successful injection reads or alters host data under the plugin process's permissions.

The record

CVE
CVE-2026-48695
Published
May 26, 2026
Updated
May 26, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 26, 2026CVE publishedPublication date reported by the CVE source.
  2. May 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
8.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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