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CVE-2018-10562

9.8, critical Known exploited Used in ransomware

Dasan GPON Routers Command Injection Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab) CISA KEV catalogue (opens in a new tab)
CVSS
9.8, critical critical CVSS v3.1
EPSS, next 30 days
100% higher than 99.9% of scored CVEs
Exploitation
Confirmed in the wild
Published
4 May 20188 years ago

Known exploited

CISA added this to the Known Exploited Vulnerabilities Catalog on 31 Mar 2022 and links it to ransomware activity. US federal agencies had to remediate by 21 Apr 2022, a deadline that has passed.

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

Description

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.

Details

Vendor
Dasan
Product
Gpon Router Firmware
Weakness
CWE-78 (opens in a new tab)
Status
Analyzed
Updated
17 Jun 2026
Assigner
cve@mitre.org

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

References 4

Exploit code 2

Advisories 1

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Dasan CVEs

Every Dasan CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2018-10561 Dasan GPON Routers Authentication Bypass Vulnerability KEV EPSS 93% 9.8, critical

Beyond this page

Is CVE-2018-10562 in your network?

This page tells you how dangerous CVE-2018-10562 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

CVE-2018-10562 is in the CISA catalogue of exploited vulnerabilities: attackers are already exploiting it.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.