CVE-2023-27135Known exploitationPublic exploitNetwork attack vector

Unauthenticated command injection via enabled parameter

Published Mar 23, 2023 · Updated Feb 25, 2025

Command injection in TOTOlink A7100RU firmware 7.4cu.2313_B20191024 allows remote attackers to execute commands via /setting/setWanIeCfg. The enabled parameter is passed to a command-execution path without adequate neutralization, so shell metacharacters in a crafted request are interpreted as additional commands. The CVSS record indicates no authentication or user interaction is required; successful exploitation can compromise confidentiality, integrity, and availability of the router.

CVSS severity9.8
Critical
EPSS probability2.05%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in TOTOlink A7100RU firmware 7.4cu.2313_B20191024 allows remote attackers to execute commands via /setting/setWanIeCfg. The enabled parameter is passed to a command-execution path without adequate neutralization, so shell metacharacters in a crafted request are interpreted as additional commands. The CVSS record indicates no authentication or user interaction is required; successful exploitation can compromise confidentiality, integrity, and availability of the router.

The record

CVE
CVE-2023-27135
Published
Mar 23, 2023
Updated
Feb 25, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-77, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 23, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 25, 2025Exploitation reportedCISA SSVC proof-of-concept assessment
  3. Feb 25, 2025Record 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

9.8NVDCVSS: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.

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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 exploitationReported
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.

Reported exploitation

Technologies

Your stack

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Your stack

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