CVE-2025-8730: CVE-2025-8730: A vulnerability was found in Belkin F9K1009 and F9K1010 2.00.04/2.00.09 and classified as …

What it is

A vulnerability was found in Belkin F9K1009 and F9K1010 2.00.04/2.00.09 and classified as critical. Affected by this issue is some unknown functionality of the component Web Interface. The manipulation leads to hard-coded credentials. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Exploitation evidence

First exploit evidence seen: 2025-08-11 (earliest date across the sources below).

Exploited in the wild

No source on this site lists in-the-wild exploitation yet (CISA KEV, VulnCheck KEV).

Public exploit code

Exploit-DB

• EDB-52407: Belkin F9K1009 F9K1010 2.00.04/2.00.09 - Hard Coded Credentials (2025-08-11)

GitHub proof-of-concept repositories below quality bar

1 public repositories from 1 accounts, first seen 2025-08-08.

Verify before running: public PoCs can be malicious. Read the code and only run it in an isolated lab. A PoC means exploit code is public, not that this CVE is exploited in the wild.

Sources: Exploit-DB (OffSec) · nomi-sec/PoC-in-GitHub.

How to fix it

Fixed versions

NVD does not list a fixed version for this CVE. Use the vendor advisory below.

Derived from the NVD CPE configuration (versionEndExcluding / versionEndIncluding). Always confirm with the vendor advisory.

Vendor advisories and patches

No vendor-tagged reference yet; see the full reference list.

MITRE ATT&CK mitigations for this chain

• M1032 Multi-factor Authentication (for T1078.001) : Implement multi-factor authentication (MFA) for default accounts whenever possible to prevent unauthorized access, even if credentials for these accounts are compromised. MFA adds an additional layer of security that requires more than just a username and password, making it significantly harder for adversaries to expl
• M1027 Password Policies (for T1078.001) : Applications and appliances that utilize default username and password should be changed immediately after the installation, and before deployment to a production environment.

Detection Generic guidance

• Initial Access: Alert on unusual requests to the affected service (odd paths, oversized payloads, exploit strings) in WAF, reverse-proxy and application logs.
• Persistence: Look for new files in web roots, new scheduled tasks/services, and new accounts created after the exposure window.
• Privilege Escalation: Alert on processes gaining SYSTEM/root unexpectedly, and on exploitation crashes of privileged services.

Response checklist Generic guidance

1. Inventory: find every instance of the affected product and version (include internet-facing and forgotten ones).
2. Patch or mitigate per the vendor advisory; if you cannot patch, remove internet exposure or apply the vendor workaround.
3. Assume compromise if the system was exposed before patching: hunt for the indicators in the advisory and review logs back to the disclosure date.
4. Rotate credentials and secrets stored on or used by the affected system if compromise cannot be ruled out.