CVE-2022-25061Public exploitNetwork attack vector

Authenticated command execution via unsanitized interface name

Published Feb 25, 2022 · Updated Jul 9, 2026

Command injection in TP-Link TL-WR840N(ES) firmware 6.20_180709 allows remote authenticated users to execute arbitrary OS commands. The oal_setIp6DefaultRoute path accepts a semicolon-delimited __ifName value in a /cgi?2 POST and incorporates it into command execution. Administrator credentials and network access to the management CGI are required; successful exploitation can reboot the device or launch a reverse shell.

CVSS severity9.8
Critical
EPSS probability58.70%
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 TP-Link TL-WR840N(ES) firmware 6.20_180709 allows remote authenticated users to execute arbitrary OS commands. The oal_setIp6DefaultRoute path accepts a semicolon-delimited __ifName value in a /cgi?2 POST and incorporates it into command execution. Administrator credentials and network access to the management CGI are required; successful exploitation can reboot the device or launch a reverse shell.

The record

CVE
CVE-2022-25061
Published
Feb 25, 2022
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 25, 2022CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record 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

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS: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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

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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