CVE-2026-7026: A vulnerability was determined in D-Link DGS-3420 1.50.018

Routine

MEDIUM 4.5MITIGATE

CVE-2026-7026 is a medium-severity flaw (CVSS 4.5) affecting dgs-3420-28tc firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was determined in D-Link DGS-3420 1.50.018. This issue affects some unknown processing of the component System Information Settings Page. This manipulation of the argument System Name causes cross site scripting. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	4.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.6% (top 54%)
CISA exploited list	No
Weakness	CWE-79, CWE-94
Published	2026-04-26
Last modified	2026-10-26

Publisher (CNA): VulDB · Vendor: dlink

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-26 08:16 UTCPublished CVE record published
2026-10-26 22:10 UTCUpdated Record last modified

dlink dgs-3420-28tc firmware MITIGATE

Affected: 1.50.018

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.50.018

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-7026?

dgs-3420-28tc firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-7026 being exploited?

CVE-2026-7026 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-7026 affect?

CVE-2026-7026 affects dgs-3420-28tc firmware. Severity is medium (CVSS 4.5). A vulnerability was determined in D-Link DGS-3420 1.50.018. This issue affects some unknown processing of the component System Information Settings Page. This manipulation of the argument System Name causes cross site scripting. Remote expl

How urgent is CVE-2026-7026?

Priority 27/100. No elevated risk signals yet.

Software pages

D-Link vulnerabilities

References

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