CVE-2021-42230Public exploitNetwork attack vector

Unauthenticated command execution via diagnostic parameter

Published Apr 15, 2022 · Updated Aug 4, 2024

OS command injection in Seowon 130-SLC router versions available as of 2021-09-15 allows remote attackers to execute commands. The diagnostic request handler uses the unvalidated queriesCnt value in a system command, allowing a semicolon-prefixed shell command to execute and return output in the HTTP response. No authentication or user interaction is required, and commands execute with the router's administrative privileges.

CVSS severity9.8
Critical
EPSS probability6.33%
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 Seowon 130-SLC router versions available as of 2021-09-15 allows remote attackers to execute commands. The diagnostic request handler uses the unvalidated queriesCnt value in a system command, allowing a semicolon-prefixed shell command to execute and return output in the HTTP response. No authentication or user interaction is required, and commands execute with the router's administrative privileges.

The record

CVE
CVE-2021-42230
Published
Apr 15, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 15, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

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
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

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 exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1059.004Unix 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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