Public vulnerability disclosure

CVE-2025-56498

CVE-2025-56498

publishedCWE-78

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.

Technical severity5.3 mediumCVSS 3.1 · NVD: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Published2025-09-03Source updated 2026-11-07
Collected2026-11-071 attributed source

Fixes and workarounds

No remediation reported in collected sources.

Missing remediation information is not evidence that no patch exists.

Affected products and versions

Affected products, source version ranges and reporting authorities
ProductVersionsAuthority
pgn6401v_firmware
prolink2u
≤ 8.1.2 (affected, custom)
Configuration dependent
This product alone does not establish exposure; review the source applicability configuration.
NVD

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

NVD applicability configurations (1)

These expressions retain AND/OR operators, negation, and required environmental products. A listed product is not sufficient to establish exposure when additional conditions apply.

[
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:prolink2u:pgn6401v_firmware:*:*:*:*:*:*:*:*",
            "versionEndIncluding": "8.1.2",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      },
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:h:prolink2u:pgn6401v:-:*:*:*:*:*:*:*",
            "vulnerable": false
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "AND"
  }
]

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / scoreVectorAuthority
3.1 / 5.3
medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NNVD: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Exploit evidence

References

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