CVE-2023-31569Public exploitNetwork attack vector

Unauthenticated command execution via unsanitized hostname

Published Jun 6, 2023 · Updated Jul 9, 2026

Command injection in TOTOLINK X5000R firmware 9.1.0cu.2350_B20230313 allows remote attackers to execute commands via a crafted WAN request. The setWanCfg handler embeds the unvalidated hostName parameter in an echo command and passes the resulting string to CsteSystem. No authentication or user interaction is required; successful exploitation permits arbitrary command execution on the router.

CVSS severity9.8
Critical
EPSS probability3.06%
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 firmware 9.1.0cu.2350_B20230313 allows remote attackers to execute commands via a crafted WAN request. The setWanCfg handler embeds the unvalidated hostName parameter in an echo command and passes the resulting string to CsteSystem. No authentication or user interaction is required; successful exploitation permits arbitrary command execution on the router.

The record

CVE
CVE-2023-31569
Published
Jun 6, 2023
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-77, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NVDCVSS: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 exploitPublished

Weakness, pattern, technique

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

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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