CVE-2019-19824Public exploitNetwork attack vector

Authenticated command execution via unchecked sysCmd parameter

Published Jan 27, 2020 · Updated Aug 28, 2024

OS command injection in TOTOLINK Realtek SDK router firmware allows remote authenticated users to execute arbitrary commands via sysCmd. The boafrm/formSysCmd handler passes the sysCmd form value to the device's OS command path even when the syscmd.htm page is absent. Access to the router administration interface and valid credentials is required; successful execution grants control over the device internals.

CVSS severity8.8
High
EPSS probability25.14%
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 TOTOLINK Realtek SDK router firmware allows remote authenticated users to execute arbitrary commands via sysCmd. The boafrm/formSysCmd handler passes the sysCmd form value to the device's OS command path even when the syscmd.htm page is absent. Access to the router administration interface and valid credentials is required; successful execution grants control over the device internals.

The record

CVE
CVE-2019-19824
Published
Jan 27, 2020
Updated
Aug 28, 2024
Vendor
TOTOLINK
Product
N301RT Firmware
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 27, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.1.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

TOTOLINK · N301RT Firmwareversion=0 <=2.1.6
TOTOLINK · N302RE Firmwareversion=0 <2.0.2
TOTOLINK · A3002RU Firmwareversion=0 <=2.0.0
TOTOLINK · A702R Firmwareversion=0 <=2.1.3
TOTOLINK · N150RT Firmwareversion=0 <=3.4.0
TOTOLINK · TOTOLINK N200RE Firmwareversion=0 <=4.0.0
TOTOLINK · N100RE Firmwareversion=0 <=3.4.0

Published CVSS scores

9.0NIST National Vulnerability DatabaseAV:N/AC:L/Au:S/C:C/I:C/A:C
8.8NIST National Vulnerability DatabaseCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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 exploitPublished

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

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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