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Vulnerability report

Active exploitation observed Confirmed confidence In CISA KEV

CVE-2018-10562

GPON home routers Command Injection

Dasan / GPON home routers

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Severity
CVSS 9.8 · Critical
Confidence
Confirmed
Exploit status
Observed in sensors
EPSS
100.0%
First observed
09 Jun 2026
Last observed
25 Aug 2026

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2018-10562 is an unauthenticated vulnerability affecting Dasan GPON home routers. An issue was discovered on Dasan GPON home routers. Command Injection can occur via the dest_host parameter in a diag_action=ping...

Is it exploited?

Yes. Previdian sensors observed exploitation attempts with confirmed confidence.

Who is affected?

Dasan / GPON home routers.

What should we do?

Patch immediately, validate internet-facing exposure, and monitor for matching requests.

Overview

An issue was discovered on Dasan GPON home 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.

Published
04 May 2018
Exploitation Reported
31 Mar 2022
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

nuclei_scanner ransomware edge cisa malware

CVE References

  • CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2018-10562
  • 44576 exploit-db.com · Exploit https://www.exploit-db.com/exploits/44576/
  • 107053 securityfocus.com · VDB Entry http://www.securityfocus.com/bid/107053
  • vpnmentor.com/blog/critical-vulnerability-gpon-router vpnmentor.com · CVE Record https://www.vpnmentor.com/blog/critical-vulnerability-gpon-router/

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CISA

Recorded 31 Mar 2022

Independent exploitation attestation added to the Previdian record.

Active exploitation observed

Previdian sensor

First observed 12 Jun 2026

First-party sensor telemetry confirms matching exploitation attempts.

Used in malware

CISA

Recorded 31 Mar 2022

Malware families have been linked to exploitation of this CVE.

Proof of concept available

GitHub

Recorded 06 Jun 2018

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

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Source Added
CISA First 2022-03-31 00:00 UTC
The Shadowserver 2026-06-01 00:00 UTC
Previdian 2026-06-12 00:32 UTC

Operational indicators for this CVE are listed under Detection.

Sensor telemetry

First-party evidence of exploitation activity

Aggregate observations show the scale, recency, and distribution of activity without overstating sparse data.

196

Attempts observed

180

Unique attacker IPs

17

Attacker countries

AR · AU · BR · CN · HK · IN · IT · JP · NL · PK · RU · SE · SY · TH · TW · US · ZA

34

Sensors observed

Exploitation attempts over the last 79 days

Daily events observed by Previdian sensors

Updated 25 Aug 2026

0
1
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0
4
1
1
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0
1
0
1
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0
2
1
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4
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1
4
48
2
3
1
7
6
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3
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4
4
8
4
3
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3
9
2
7
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20
6
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12
2
8 Jun 24 Jun 10 Jul 26 Jul 25 Aug

First observed 09 Jun 2026 · Last observed 25 Aug 2026

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Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
2
User-Agents
8

Raw values available in Pro and Enterprise.

Virtual patch status

Previdian virtual patch guidance is available for this CVE.

AWS WAF Cloudflare ModSecurity

Attacker IP Indicators

Attacker IP indicators observed · available in Pro and Enterprise.

Sensor-derived attacker IP indicators are available to Pro and Enterprise accounts under Detection and through the Pro API.

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Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2018/CVE-2018-10562.yaml 25 Apr 2025

Virtual Patch Detail

Compensating WAF rules for this CVE.

Available

Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to Previdian Enterprise users.

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Risk and context

Severity, weaknesses, and research context

CVSS v3.1

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

EPSS

100.0%

Weaknesses

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') CWE-78

All CVSS Scores

CVSS v3.1 9.8 Critical

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

CVSS v2.0 7.5 High

AV:N/AC:L/Au:N/C:P/I:P/A:P

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

Dasan GPON Devices - Remote Code Execution

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

  1. Virtual patch available

    Compensating WAF rule available to block exploitation

  2. Public PoC available

    Public proof-of-concept code published

  3. Observed by Previdian sensors

    Evidence-backed exploitation signal

  4. Indicators of compromise added (308)

    Indicators of compromise recorded

  5. KEV confirmed by The Shadowserver

    Exploitation attested by an external source

  6. Nuclei template available

    Scanner coverage available

  7. Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  8. First public exploitation report

    Exploit observed in malware

  9. CVE published

    Vulnerability disclosed publicly

  10. CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2018-10562

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2018-10562",
  "confidence": "Confirmed",
  "cvss_score": 9.8,
  "cvss_estimated": false,
  "epss_score": 0.99952,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": true
  },
  "sensor_telemetry": { "attempts": 196, "sensors": 34 }
}

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