CVE-2026-82691: A vulnerability has been found in D-Link DNS-320L, DNS-327L, DNS-340L and DNS-345 up to 20260717

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CRITICAL 9.1

CVE-2026-82691 is a critical-severity flaw (CVSS 9.1) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability has been found in D-Link DNS-320L, DNS-327L, DNS-340L and DNS-345 up to 20260717. Affected by this issue is some unknown functionality of the file /cgi-bin/usb_device.cgi of the component CGI Handler. Such manipulation of the argument f_ups_ip leads to os command injection. The attack may be performed from remote. The exploit has been disclosed to the public and may be used.

Why this priority

Critical severity
CISA SSVC: public proof of concept

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	3.6% (top 11%)
CISA exploited list	No
Weakness	CWE-77, CWE-78
Published	2026-08-31
Last modified	2026-09-02

Publisher (CNA): VulDB

Last updated 2026-09-02 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Timeline

2026-08-31 12:17 UTCPublished CVE record published
2026-09-02 14:17 UTCUpdated Record last modified

Exact fixes by distribution

Fedora ELN · fonttools · FIXED · 4.68.0-1.eln159 · FEDORA-2026-37fa4b964c · source

sudo dnf upgrade --advisory=FEDORA-2026-37fa4b964c

Fedora 46 · fonttools · FIXED · 4.68.0-1.fc46 · FEDORA-2026-65d6c01c75 · source

sudo dnf upgrade --advisory=FEDORA-2026-65d6c01c75

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/DLINK-CM

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-2026-82691?

No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.

Is CVE-2026-82691 being exploited?

CVE-2026-82691 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-2026-82691 affect?

CVE-2026-82691 affects affected software. Severity is critical (CVSS 9.1). A vulnerability has been found in D-Link DNS-320L, DNS-327L, DNS-340L and DNS-345 up to 20260717. Affected by this issue is some unknown functionality of the file /cgi-bin/usb_device.cgi of the component CGI Handler. Such manipulation of th

How urgent is CVE-2026-82691?

Priority 57/100. Critical severity; CISA SSVC: public proof of concept

Software pages

D-Link vulnerabilities

References

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