CVE-2025-56498: pgn6401v Command Injection — Exploit

Description

An OS command injection vulnerability exists in PLDT WiFi Router's Prolink PGN6401V Firmware 8.1.2 web management interface. The ping6.asp page submits user input to the /boaform/formPing6 endpoint via the pingAddr parameter, which is not properly sanitized. An authenticated attacker can exploit this flaw by injecting arbitrary system commands, which are executed by the underlying operating system with root privileges. The router uses the Boa web server (version 0.93.15) to handle the request. Successful exploitation can lead to full system compromise and unauthorized control of the network device.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Weakness Type (CWE)

CWE-78 OS Command Injection

Affected Products

Vendor	Product	Versions
prolink2u	pgn6401v_firmware	< 8.1.2
prolink2u	pgn6401v	All

References

Exploits

https://github.com/Jorge2Rubio/CVEs/blob/main/CVE-2025-56498.md

Other References

https://prolink2u.com/products/pgn6401v

Frequently Asked Questions

What is CVE-2025-56498? +

An OS command injection vulnerability exists in PLDT WiFi Router's Prolink PGN6401V Firmware 8.1.2 web management interface. The ping6.asp page submits user input to the /boaform/formPing6 endpoint via the pingAddr parameter, which is not properly sanitized. An authenticated attacker can exploit this flaw by injecting arbitrary system commands, which are executed by the underlying operating system with root privileges. The router uses the Boa web server (version 0.93.15) to handle the request. Successful exploitation can lead to full system compromise and unauthorized control of the network device. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2025-56498? +

CVE-2025-56498 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-56498? +

CVE-2025-56498 affects products from prolink2u, specifically: pgn6401v, pgn6401v_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-56498? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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