CVE-2023-31986Public exploitNetwork attack vector

Unauthenticated code execution via setWAN command injection

Published May 15, 2023 · Updated Jan 23, 2025

Command injection in Edimax BR-6428NS V4 firmware 1.10 allows remote attackers to execute arbitrary code through the setWAN web handler. The /bin/webs setWAN function accepts backtick-delimited commands in the pppUserName parameter without neutralizing the command syntax. Network access to the router web interface is sufficient; no authentication or user interaction is required.

CVSS severity9.8
Critical
EPSS probability8.18%
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 Edimax BR-6428NS V4 firmware 1.10 allows remote attackers to execute arbitrary code through the setWAN web handler. The /bin/webs setWAN function accepts backtick-delimited commands in the pppUserName parameter without neutralizing the command syntax. Network access to the router web interface is sufficient; no authentication or user interaction is required.

The record

CVE
CVE-2023-31986
Published
May 15, 2023
Updated
Jan 23, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-77, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 23, 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

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8CISA-ADPCVSS: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')
T1190Exploit Public-Facing Application

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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