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CVE-2026-82689— D-Link DNS-320L/DNS-327L/DNS-340L/DNS-345 ISO Image isomount_mgr.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 DNS-320L、DNS-327L、DNS-340L 和 DNS-345（固件版本截至 20260717）中检测到一个安全漏洞。该漏洞位于“ISO 镜像处理程序”组件中的文件的一个未知函数中。对参数的操纵会导致操作系统命令注入。该攻击可远程执行，且利用该漏洞的代码已经公开，可被用于实际攻击。

CVSS 9.9 · Critical Updated Aug 31, 2026

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Vulnerability Information

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Vulnerability Title

D-Link DNS-320L/DNS-327L/DNS-340L/DNS-345 ISO Image isomount_mgr.cgi os command injection

Source: CVE Program / CVE List V5

Vulnerability Description

A vulnerability was detected in D-Link DNS-320L, DNS-327L, DNS-340L and DNS-345 up to 20260717. Affected is an unknown function of the file /cgi-bin/isomount_mgr.cgi of the component ISO Image Handler. The manipulation of the argument upIsoRootPath results in os command injection. The attack can be executed remotely. The exploit is now public and may be used.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:L/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
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-2026-82689

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-82689

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Same Patch Batch · D-Link · 2026-08-31 · 5 CVEs total

CVE-2026-82691	9.1 CRITICAL	D-Link DNS-320L/DNS-327L/DNS-340L/DNS-345 CGI usb_device.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-2026-82689

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Goal Reached Thanks to every supporter — we hit 100%!

CVE-2026-82689— D-Link DNS-320L/DNS-327L/DNS-340L/DNS-345 ISO Image isomount_mgr.cgi os command injection

Quick assessment

I. Basic Information for CVE-2026-82689

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2026-82689

III. Intelligence Information for CVE-2026-82689

Vendor Pages for CVE-2026-82689 (1)

Other References for CVE-2026-82689 (1)

Other References for CVE-2026-82689 (3)

Same Patch Batch · D-Link · 2026-08-31 · 5 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2026-82689

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