CVE-2018-6211

On D-Link DIR-620 devices with a certain customized (by ISP) variant of firmware 1.0.3, 1.0.37, 1...

7.2 High

On D-Link DIR-620 devices with a certain customized (by ISP) variant of firmware 1.0.3, 1.0.37, 1.3.1, 1.3.3, 1.3.7, 1.4.0, and 2.0.22, OS command injection is possible as a result of incorrect processing of the res_buf parameter to index.cgi.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: High
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

5.68%Up 4.6 points since Apr 14, 2021

What each source reports

NVD Score used 7.2

Record: CVE-2018-6211
CVSS 3.0: 7.2 HighCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 9.0 HighAV:N/AC:L/Au:S/C:C/I:C/A:C
Weakness: CWE-78
Updated: 2026-11-02

CVE List No score

Record: CVE-2018-6211
Updated: 2026-11-02

EUVDEUVD-2018-17972 No score

Record: EUVD-2018-17972
Updated: 2026-11-03

GitHub AdvisoriesGHSA-wwqf-vvjr-rmw4 7.2

On D-Link DIR-620 devices with a certain customized (by ISP) variant of firmware 1.0.3, 1.0.37, 1...

Record: GHSA-wwqf-vvjr-rmw4
CVSS 3.0: 7.2 HighCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-78
Updated: 2026-11-02

Affected products

d-link dir-620 firmware

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-6211 is a high vulnerability (CVSS 7.2) in D-link Dir-620 Firmware, published June 20, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 5.68%, the 93rd percentile. No source names a fixed version.