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CVE-2018-10562

Dasan GPON Routers Command Injection

9.8 CRITICALActively exploited (CISA KEV)Used in ransomwarePublic exploitEPSS 99.9%
  1. Published4 May 2018
  2. Added to CISA KEV31 Mar 2022
  3. Remediation due21 Apr 2022
Actively exploited (CISA KEV)

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

Added to KEV: 31 Mar 2022Federal remediation due: 21 Apr 2022Used in ransomware

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Dasannetworks Gpon Router Firmwareall versions

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2018-10562 being actively exploited?

Yes. CVE-2018-10562 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 31 Mar 2022. It has been used in ransomware campaigns.

How severe is CVE-2018-10562?

CVE-2018-10562 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 99.9% probability of exploitation.

Which products are affected by CVE-2018-10562?

Affected products include Dasannetworks Gpon Router Firmware.

How do I fix CVE-2018-10562?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2018-10562 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.