Vulnerability · Published Aug 31, 2026 · Assigned by VulDB

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

Critical 9.1

In plain English

A critical-severity OS command injection in DNS-320L from D-Link. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 3.6% (higher than 90% of all known vulnerabilities).

Severity (CVSS 3.1)9.1Critical

Exploit odds (30 days)3.6%top 10.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
D-Link	DNS-320L	20260717
D-Link	DNS-327L	20260717
D-Link	DNS-340L	20260717
D-Link	DNS-345	20260717

Weakness: CWE-78, CWE-77 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-397179 | D-Link DNS-320L/DNS-327L/DNS-340L/DNS-345 CGI usb_device.cgi os command injection vdb-entry, technical-description
VDB-397179 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
CVE-2026-82691 | CVE Analysis and Report third-party-advisory
Submit #894210 | D-Link DNS-320L/DNS-327L/DNS-340L/DNS-345 ShareCenter NAS family multiple confirmed ShareCenter firmware builds OS Command Injection third-party-advisory
https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/DLINK-CMD-005-vulndb.md exploit
https://www.dlink.com/ product