Which products and versions are affected by CVE-2021-42627?

Affected: Dir-615 Firmware (Dlink) versions 20.06; Dir-615 J1 Firmware (Dlink) versions 20.06; Dir-615jx10 Firmware (Dlink) versions 20.06, among others. The full list is in the CVE brief.

Is CVE-2021-42627 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2021-42627 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2021-42627?

No public exploit code is known.

Is there a fix for CVE-2021-42627?

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

How urgently should CVE-2021-42627 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2021-42627

Critical

The WAN configuration page "wan.htm" on D-Link DIR-615 devices with firmware 20.06 can be accessed directly without authentication which can lead to disclose the information about WAN settings and also leverage attacker to modify the data fields of page.

Published Aug 23, 2022 · Updated Jul 9, 2026

Key Facts

Patch immediately

CVE-2021-42627 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Dir-615 Firmware (Dlink), Dir-615 J1 Firmware (Dlink), Dir-615jx10 Firmware (Dlink) and 1 more product.
It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
EPSS estimates a 63% 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 very likely to be exploited soon.

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)

63%

Higher than 99.1% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

None known

Get the full CVE-2021-42627 brief as a PDF

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

Description

Affected Products

4 affected entries in total

Product	Affected versions	Fixed in
Dir-615 FirmwareDlink	20.06	n/a
Dir-615 J1 FirmwareDlink	20.06	n/a
Dir-615jx10 FirmwareDlink	20.06	n/a
Dir-615 T1 FirmwareDlink	20.06	n/a

Timeline

Publicly disclosed
Aug 23, 2022
Last updated
Jul 9, 2026

References

advisoryhttps://github.com/sanjokkarki/D-Link-DIR-615/blob/main/CVE-2021-42627
advisoryhttps://www.dlink.com/en/security-bulletin/
otherhttp://d-link.com
otherhttp://dlink.com

FAQ

Common Questions.

The WAN configuration page "wan.htm" on D-Link DIR-615 devices with firmware 20.06 can be accessed directly without authentication which can lead to disclose the information about WAN settings and also leverage attacker to modify the data fields of page.
Affected: Dir-615 Firmware (Dlink) versions 20.06; Dir-615 J1 Firmware (Dlink) versions 20.06; Dir-615jx10 Firmware (Dlink) versions 20.06, among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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