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Findings

CVE-2018-10562

Dasan GPON Routers Command Injection Vulnerability

Published May 3, 2018 · updated Jun 16, 2026 · dasannetworks gpon router firmware

An issue was discovered on Dasan GPON home routers. Command Injection can occur via the dest_host parameter in a diag_action=ping request to a GponForm/diag_Form URI. Because the router saves ping results in /tmp and transmits them to the user when the user revisits /diag.html, it's quite simple to execute commands and retrieve their output.

Timeline

Detection, updates, and resolution for this record.

  1. May 3, 2018 · Catalog

    Detected

    An issue was discovered on Dasan GPON home routers. Command Injection can occur via the dest_host parameter in a diag_action=ping request to a GponForm/diag_Form URI. Because the router saves ping results in /tmp and transmits them to the user when the user revisits /diag.html, it's quite simple to execute commands and retrieve their output.

  2. Mar 31, 2022 · CISA KEV

    Known exploited

    The impacted product is end-of-life and should be disconnected if still in use.

  3. Apr 21, 2022 · CISA KEV

    Remediation due

    The impacted product is end-of-life and should be disconnected if still in use.

  4. Jun 16, 2026 · Catalog

    Updated

    An issue was discovered on Dasan GPON home routers. Command Injection can occur via the dest_host parameter in a diag_action=ping request to a GponForm/diag_Form URI. Because the router saves ping results in /tmp and transmits them to the user when the user revisits /diag.html, it's quite simple to execute commands and retrieve their output.

Required action

The impacted product is end-of-life and should be disconnected if still in use.

CISA due date Apr 21, 2022

Affected

  • cpe dasannetworks/gpon router firmwareversion unspecified
  • vendor Dasan Gigabit Passive Optical Network (GPON) Routersversion unspecified

Sources

  • CISA KEVCVE-2018-10562

    Dasan GPON Routers contain an authentication bypass vulnerability. When combined with CVE-2018-10561, exploitation can allow an attacker to perform remote code execution.

    cisa.gov
  • CVE.orgCVE-2018-10562

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2018-10562

    30-day exploitation probability 99.9%

    first.org
  • Exploit Database44576

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • NIST NVDCVE-2018-10562

    An issue was discovered on Dasan GPON home routers. Command Injection can occur via the dest_host parameter in a diag_action=ping request to a GponForm/diag_Form URI. Because the router saves ping results in /tmp and transmits them to the user when the user revisits /diag.html, i

    nvd.nist.gov

References