CVE-2020-13976Public exploitNetwork attack vector

Admin-level command execution via unescaped ping host

Published Jun 9, 2020 · Updated Nov 18, 2024

OS command injection in the DD-WRT Diagnostic page through build 16214 allows remote authenticated users to execute shell commands. The ping handler passes the host field to a shell command without neutralizing metacharacters, causing appended commands to execute on the router. Administrative access is required, and the maintainers dispute the report because administrators already possess equivalent command access.

CVSS severity8.8
High
EPSS probability1.77%
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 the DD-WRT Diagnostic page through build 16214 allows remote authenticated users to execute shell commands. The ping handler passes the host field to a shell command without neutralizing metacharacters, causing appended commands to execute on the router. Administrative access is required, and the maintainers dispute the report because administrators already possess equivalent command access.

The record

CVE
CVE-2020-13976
Published
Jun 9, 2020
Updated
Nov 18, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jun 9, 2020CVE publishedPublication date reported by the CVE source.
  2. Nov 18, 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 privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.8NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
8.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
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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