CVE-2023-39617Network attack vector

Unauthenticated command execution via crafted lang parameter

Published Aug 21, 2023 · Updated Oct 7, 2024

Command injection in TOTOLINK X5000R 9.1.0cu.2089_B20211224 and 9.1.0cu.2350_B20230313 allows remote attackers to execute code. The setLanguageCfg function handles the lang value without neutralizing shell metacharacters before using it in a system command. No authentication or user interaction is required, but network reachability to the router's management service is necessary; successful exploitation runs attacker-supplied commands on the appliance.

CVSS severity9.8
Critical
EPSS probability1.74%
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 X5000R 9.1.0cu.2089_B20211224 and 9.1.0cu.2350_B20230313 allows remote attackers to execute code. The setLanguageCfg function handles the lang value without neutralizing shell metacharacters before using it in a system command. No authentication or user interaction is required, but network reachability to the router's management service is necessary; successful exploitation runs attacker-supplied commands on the appliance.

The record

CVE
CVE-2023-39617
Published
Aug 21, 2023
Updated
Oct 7, 2024
Vendor
TOTOLINK
Product
X5000R
Classifications
CWE-77, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 7, 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=v9.1.0cu.2089_b20211224
  2. Affected versionversion=v9.1.0cu.2350_b20230313

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TOTOLINK · X5000Rversion=v9.1.0cu.2089_b20211224; version=v9.1.0cu.2350_b20230313

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('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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