CVE-2023-51014

Unauthenticated command execution via lanSecDns injection

Published Dec 22, 2023 · Updated Sep 12, 2024

Command injection in TOTOLINK EX1800T Firmware 9.1.0cu.2112_B20220316 allows remote attackers to execute arbitrary commands. The cstecgi.cgi setLanConfig handler processes an untrusted lanSecDns value, but the public record does not disclose the exact command construction or neutralization failure. No authentication or user interaction is required, and successful exploitation grants command execution on the appliance.

CVSS severity9.8
Critical
EPSS probability1.05%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in TOTOLINK EX1800T Firmware 9.1.0cu.2112_B20220316 allows remote attackers to execute arbitrary commands. The cstecgi.cgi setLanConfig handler processes an untrusted lanSecDns value, but the public record does not disclose the exact command construction or neutralization failure. No authentication or user interaction is required, and successful exploitation grants command execution on the appliance.

The record

CVE
CVE-2023-51014
Published
Dec 22, 2023
Updated
Sep 12, 2024
Vendor
TOTOLINK
Product
TOTOLINK EX1800T Firmware
Classifications
CWE-77, T1059
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 22, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 12, 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=9.1.0cu.2112_b20220316

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

TOTOLINK · TOTOLINK EX1800T Firmwareversion=9.1.0cu.2112_b20220316

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8CISA-ADPCVSS:3.1/AV:A/AC:L/PR:N/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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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