Which products and versions are affected by CVE-2018-10561?

Affected: Gpon Router Firmware (Dasannetworks). The full list is in the CVE brief.

Is CVE-2018-10561 being exploited in the wild?

It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since May 7, 2018 and is known to be used in ransomware campaigns.

Is CVE-2018-10561 in the CISA KEV catalog?

Yes. It was added on Mar 31, 2022 with a federal remediation due date of Apr 21, 2022.

Is there a public exploit for CVE-2018-10561?

Public exploit code is available.

Is there a fix for CVE-2018-10561?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2018-10561 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2018-10561

CriticalExploitedPublic exploit

An issue was discovered on Dasan GPON home routers.

Published May 4, 2018 · Updated Nov 5, 2025

Key Facts

Patch immediately

CVE-2018-10561 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Gpon Router Firmware (Dasannetworks).
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since May 7, 2018 and is known to be used in ransomware campaigns. Public exploit code is available.
EPSS estimates a 93% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

9.8

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

EPSS (30-day exploit likelihood)

93%

Higher than 99.8% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings, used by ransomware

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2018-10561 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

An issue was discovered on Dasan GPON home routers. It is possible to bypass authentication simply by appending "?images" to any URL of the device that requires authentication, as demonstrated by the /menu.html?images/ or /GponForm/diag_FORM?images/ URI. One can then manage the device.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
CISA KEV	Mar 31, 2022	Apr 21, 2022	Not reported
Industry KEV feed	May 7, 2018	Apr 21, 2022	Known
CIRCL KEV	Mar 31, 2022	Apr 21, 2022	Not reported
ENISA EUVD	Mar 31, 2022	n/a	Not reported

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

Affected Products

1 affected entries in total

Product	Affected versions	Fixed in
Gpon Router FirmwareDasannetworks	See advisory	n/a

Timeline

Publicly disclosed
May 4, 2018
Added to Industry KEV feed
May 7, 2018
Added to CISA KEV
Mar 31, 2022
Added to CIRCL KEV
Mar 31, 2022
Added to ENISA EUVD
Mar 31, 2022
Last updated
Nov 5, 2025

Weakness Type

CWE-287 Improper Authentication

References

9 more references in the full CVE brief

FAQ

Common Questions.

An issue was discovered on Dasan GPON home routers.
Affected: Gpon Router Firmware (Dasannetworks). The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since May 7, 2018 and is known to be used in ransomware campaigns.
Yes. It was added on Mar 31, 2022 with a federal remediation due date of Apr 21, 2022.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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