CVE-2025-56498: An OS command injection vulnerability exists in PLDT WiFi Router's Prolink PGN6401V Firmware 8.1.2 web managem

Q: How do I fix CVE-2025-56498?

pgn6401v firmware: upgrade to newer than 8.1.2. Exact commands for each OS are on this page.

Q: Is CVE-2025-56498 being exploited?

CVE-2025-56498 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-56498 affect?

CVE-2025-56498 affects pgn6401v firmware. Severity is medium (CVSS 5.3). 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 p

Q: How urgent is CVE-2025-56498?

Priority 48/100. Public exploit reference; Remotely exploitable, no login, no user action

This week

MEDIUM 5.3REMOTEUPGRADE

CVE-2025-56498 is a medium-severity flaw (CVSS 5.3) affecting pgn6401v firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Weakness	CWE-78
Published	2025-09-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: prolink2u

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-09-03 16:15 UTCPublished CVE record published
2026-06-17 09:42 UTCUpdated Record last modified

prolink2u pgn6401v firmware UPGRADE

Affected: <= 8.1.2

Fixed in: newer than 8.1.2

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-56498?

pgn6401v firmware: upgrade to newer than 8.1.2. Exact commands for each OS are on this page.

Is CVE-2025-56498 being exploited?

CVE-2025-56498 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-56498 affect?

CVE-2025-56498 affects pgn6401v firmware. Severity is medium (CVSS 5.3). 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 p

How urgent is CVE-2025-56498?

Priority 48/100. Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Wi-Fi vulnerabilities

References

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