ZeroDay Findings
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2018-10562

Dasan GPON Routers Command Injection Vulnerability

Published May 3, 2018 · catalog updated Jun 16, 2026 · Dasan Gigabit Passive Optical Network (GPON) Routers

Patch now

CVE-2018-10562 is in the CISA known-exploited catalog, due Apr 21, 2022. Confirm Dasan Gigabit Passive Optical Network (GPON) Routers against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
Critical9.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
99.95%
Remediation
Remediation guidance
Affected products
cpe dasannetworks/gpon router firmware · vendor Dasan Gigabit Passive Optical Network (GPON) Routers

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

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

How to fix CVE-2018-10562

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2018-10562 is in the CISA known-exploited catalog, due Apr 21, 2022. Confirm Dasan Gigabit Passive Optical Network (GPON) Routers against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. The impacted product is end-of-life and should be disconnected if still in use.

What should an analyst verify?

CWE-78: OS Command Injection. EPSS 99.95%. The CISA KEV listing is the exploitation evidence. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

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.

Sources

  • CISA KEVConfirmed exploitationCVE-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.orgVulnerability recordCVE-2018-10562

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2018-10562

    30-day exploitation probability 99.9%

    first.org
  • Exploit DatabasePublic exploit reference44576

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

    exploit-db.com
  • NIST NVDVulnerability recordCVE-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
  • VulnCheck KEVConfirmed exploitationCVE-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.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.