CVE-2018-10562

dasannetworks gpon router firmware

Published 4 May 2018 · updated 17 Jun 2026 · Analyzed

9.8 Critical · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 31 Mar 2022, with a remediation deadline of 21 Apr 2022 for US federal agencies. It has been used in ransomware campaigns.

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.

References

www.securityfocus.com/bid/107053 · Broken Link, Third Party Advisory, VDB Entry
www.exploit-db.com/exploits/44576/ · Exploit, Third Party Advisory, VDB Entry
www.vpnmentor.com/blog/critical-vulnerability-gpon-router/ · Exploit, Technical Description, Third Party Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-10562 · US Government Resource