CVE-2026-82691: D-Link DNS-320L/DNS-327L/DNS-340L/DNS-345 CGI usb_device.cgi os command injection

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-31 · updated 2026-09-02
Weakness: CWE-77

Description

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.

Affected products

D-Link DNS-320L: 20260717
D-Link DNS-327L: 20260717
D-Link DNS-340L: 20260717
D-Link DNS-345: 20260717

References

https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/DLINK-CMD-005-vulndb.md
https://vuldb.com/cve/CVE-2026-82691
https://vuldb.com/submit/894210
https://vuldb.com/vuln/397179
https://vuldb.com/vuln/397179/cti
https://www.dlink.com/

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