CVE-2026-4611Network attack vector

Authenticated command execution via Hostname injection

Published Mar 23, 2026 · Updated Mar 23, 2026

OS command injection in TOTOLINK X6000R firmware allows remote authenticated users to execute arbitrary commands via a crafted Hostname. The setLanCfg function in /usr/sbin/shttpd passes attacker-controlled Hostname content into an operating-system command without neutralizing command syntax. Administrative access to the network management service is required; successful injection on either affected firmware build runs commands on the router.

CVSS severity8.6
High
EPSS probability3.03%
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 X6000R firmware allows remote authenticated users to execute arbitrary commands via a crafted Hostname. The setLanCfg function in /usr/sbin/shttpd passes attacker-controlled Hostname content into an operating-system command without neutralizing command syntax. Administrative access to the network management service is required; successful injection on either affected firmware build runs commands on the router.

The record

CVE
CVE-2026-4611
Published
Mar 23, 2026
Updated
Mar 23, 2026
Vendor
TOTOLINK
Product
X6000R
Classifications
CWE-78, CWE-77, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=9.4.0cu.1360_B20241207
  2. Affected versionversion=9.4.0cu.1498_B20250826

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

TOTOLINK · X6000Rversion=9.4.0cu.1360_B20241207; version=9.4.0cu.1498_B20250826

Published CVSS scores

8.3VulDBAV:N/AC:L/Au:M/C:C/I:C/A:C
7.2VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.6VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

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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