Which products and versions are affected by CVE-2017-3191?

Affected: Dir-130 Firmware (D-Link) versions 1.23; Dir-330 Firmware (D-Link) versions 1.12; DIR-130 versions >= 1.23, among others. The full list is in the CVE brief.

Is CVE-2017-3191 being exploited in the wild?

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

Is CVE-2017-3191 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-2017-3191?

No public exploit code is known.

Is there a fix for CVE-2017-3191?

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

How urgently should CVE-2017-3191 be patched?

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

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Vulnerability Intelligence

CVE-2017-3191

Critical

D-Link DIR-130 firmware version 1.23 and DIR-330 firmware version 1.12 are vulnerable to authentication bypass of the remote login page.

Published Dec 15, 2017 · Updated May 12, 2026

Key Facts

Patch immediately

CVE-2017-3191 is a critical-severity vulnerability (CVSS 9.8 v3) affecting Dir-130 Firmware (D-Link), Dir-330 Firmware (D-Link), DIR-130 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

9.8

CVSS:3.0/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-2017-3191 brief as a PDF

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

Description

D-Link DIR-130 firmware version 1.23 and DIR-330 firmware version 1.12 are vulnerable to authentication bypass of the remote login page. A remote attacker that can access the remote management login page can manipulate the POST request in such a manner as to access some administrator-only pages such as tools_admin.asp without credentials.

Affected Products

4 affected entries in total

Product	Affected versions	Fixed in
Dir-130 FirmwareD-Link	1.23	n/a
Dir-330 FirmwareD-Link	1.12	n/a
DIR-130	>= 1.23	n/a
DIR-330	>= 1.12	n/a

Timeline

Publicly disclosed
Dec 15, 2017
Last updated
May 12, 2026

Weakness Type

CWE-20 Improper Input Validation
CWE-294 Authentication Bypass by Capture-replay

References

FAQ

Common Questions.

D-Link DIR-130 firmware version 1.23 and DIR-330 firmware version 1.12 are vulnerable to authentication bypass of the remote login page.
Affected: Dir-130 Firmware (D-Link) versions 1.23; Dir-330 Firmware (D-Link) versions 1.12; DIR-130 versions >= 1.23, 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.

Is CVE-2017-3191 Running On Your Attack Surface?

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