CVE-2025-55583Public exploitNetwork attack vector

Unauthenticated root command execution via pre_api_arg

Published Aug 28, 2025 · Updated Aug 28, 2025

OS command injection in D-Link DIR-868L B1 router firmware FW2.05WWB02 allows remote attackers to execute commands as root. The /dws/api/UploadFile endpoint passes its pre_api_arg value to system(), popen(), and execl() in fileaccess.cgi without authentication or sanitization. Network access to the web interface is sufficient on the LAN; WAN exploitation requires remote access or port forwarding and yields full device control.

CVSS severity9.8
Critical
EPSS probability6.97%
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 D-Link DIR-868L B1 router firmware FW2.05WWB02 allows remote attackers to execute commands as root. The /dws/api/UploadFile endpoint passes its pre_api_arg value to system(), popen(), and execl() in fileaccess.cgi without authentication or sanitization. Network access to the web interface is sufficient on the LAN; WAN exploitation requires remote access or port forwarding and yields full device control.

The record

CVE
CVE-2025-55583
Published
Aug 28, 2025
Updated
Aug 28, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, CWE-306, CWE-668, T1059.004, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 28, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA ADP VulnrichmentCVSS: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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-306Missing Authentication for Critical Function
CWE-668Exposure of Resource to Wrong Sphere
T1059.004Command and Scripting Interpreter: Unix Shell
T1190Exploit Public-Facing Application

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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