CVE-2023-27826Public exploitNetwork attack vector

Authenticated root command execution via diagnostic ping

Published Apr 12, 2023 · Updated Feb 8, 2025

OS command injection in SeowonIntech SWC 5100W firmware 1.11.0.1 and 1.9.9.4 allows remote authenticated users to execute commands. The diagnostic.cgi ping handler passes the ping_ipaddr parameter to doSystem() without neutralizing shell metacharacters, so a semicolon-delimited value runs attacker-supplied Unix shell commands. Access to the router's authenticated web interface is required, and successful exploitation executes commands with root privileges, enabling complete device takeover.

CVSS severity8.8
High
EPSS probability11.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in SeowonIntech SWC 5100W firmware 1.11.0.1 and 1.9.9.4 allows remote authenticated users to execute commands. The diagnostic.cgi ping handler passes the ping_ipaddr parameter to doSystem() without neutralizing shell metacharacters, so a semicolon-delimited value runs attacker-supplied Unix shell commands. Access to the router's authenticated web interface is required, and successful exploitation executes commands with root privileges, enabling complete device takeover.

The record

CVE
CVE-2023-27826
Published
Apr 12, 2023
Updated
Feb 8, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 8, 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Command and Scripting Interpreter: Unix Shell

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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