CVE-2021-44127Public exploitNetwork attack vector

Authenticated command injection via unvalidated file parameter

Published Mar 27, 2022 · Updated Aug 4, 2024

Command injection in D-Link DAP-1360 F1 firmware 6.10 and earlier allows remote authenticated users to execute system commands. The /cgi-bin/webupg handler fails to validate the file parameter before command-capable UPGCGI_CreateDir, UPGCGI_Delete, and UPGCGI_ModifyMac operations use it. A valid web session is required; crafted name and file values invoke BusyBox commands with the appliance web service's privileges.

CVSS severity9.8
Critical
EPSS probability3.37%
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 D-Link DAP-1360 F1 firmware 6.10 and earlier allows remote authenticated users to execute system commands. The /cgi-bin/webupg handler fails to validate the file parameter before command-capable UPGCGI_CreateDir, UPGCGI_Delete, and UPGCGI_ModifyMac operations use it. A valid web session is required; crafted name and file values invoke BusyBox commands with the appliance web service's privileges.

The record

CVE
CVE-2021-44127
Published
Mar 27, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 27, 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 privilegesauthenticated

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
10.0NIST NVDAV:N/AC:L/Au:N/C:C/I:C/A:C

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

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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