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

Quick assessment

Affected
D-Link DNS-320L
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 D-Link 的 DNS-320L、DNS-327L、DNS-340L 和 DNS-345 固件版本 20260717 之前的版本中发现了一个安全漏洞。该漏洞影响的是 CGI Handler 组件中 文件的某些未知功能。通过对参数 的特殊处理，可触发操作系统命令注入。该漏洞可被远程利用，且利用方法已公开披露，可能被实际利用。

CVSS 9.1 · Critical
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I. Basic Information for CVE-2026-82691

Vulnerability Information
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Vulnerability Title
D-Link DNS-320L/DNS-327L/DNS-340L/DNS-345 CGI usb_device.cgi os command injection
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
D-Link DNS-320L 20260717 cpe:2.3:h:d-link:dns-320l:*:*:*:*:*:*:*:*
D-Link DNS-327L 20260717 cpe:2.3:h:d-link:dns-327l:*:*:*:*:*:*:*:*
D-Link DNS-340L 20260717 cpe:2.3:h:d-link:dns-340l:*:*:*:*:*:*:*:*
D-Link DNS-345 20260717 cpe:2.3:h:d-link:dns-345:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-82691

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III. Intelligence Information for CVE-2026-82691

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Vendor Pages for CVE-2026-82691 (1)

Other References for CVE-2026-82691 (1)

Other References for CVE-2026-82691 (4)

Same Patch Batch · D-Link · 2026-08-31 · 6 CVEs total

CVE-2026-82692 9.9 CRITICAL D-Link DNS-340L/DNS-345 iscsi_mgr.cgi os command injection
CVE-2026-82689 9.9 CRITICAL D-Link DNS-320L/DNS-327L/DNS-340L/DNS-345 ISO Image isomount_mgr.cgi os command injection
CVE-2026-82690 9.1 CRITICAL D-Link DNS-327L/DNS-340L ve_mgr.cgi os command injection
CVE-2026-82688 9.1 CRITICAL D-Link DNS-340L/DNS-345 Virtual Volume virtual_vol.cgi os command injection
CVE-2026-82680 8.8 HIGH D-Link DSM-G600 Multipart load_file.cgi out-of-bounds write

IV. Related Vulnerabilities

Same product: DNS-320L
Same vendor: D-Link
Same weakness: CWE-78

V. Comments for CVE-2026-82691

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