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CVE-2025-4343— D-Link DIR-600L formEasySetupWizard buffer overflow

Quick assessment

Affected
D-Link DIR-600L
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.

D-Link DIR-600是中国友讯（D-Link）公司的一款无线路由器。 D-Link DIR-600L 2.07B01及之前版本存在安全漏洞，该漏洞源于函数formEasySetupWizard对参数host处理不当，可能导致缓冲区溢出。

CVSS 8.8 · High EPSS 1.17% · P64

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-4343

Vulnerability Information
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Vulnerability Title
D-Link DIR-600L formEasySetupWizard buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been found in D-Link DIR-600L up to 2.07B01 and classified as critical. This vulnerability affects the function formEasySetupWizard. The manipulation of the argument host leads to buffer overflow. The attack can be initiated remotely. This vulnerability only affects products that are no longer supported by the maintainer.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
D-Link DIR-600 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
D-Link DIR-600是中国友讯（D-Link）公司的一款无线路由器。 D-Link DIR-600L 2.07B01及之前版本存在安全漏洞，该漏洞源于函数formEasySetupWizard对参数host处理不当，可能导致缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
D-Link DIR-600L 2.07B01 -

II. Public POCs for CVE-2025-4343

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III. Intelligence Information for CVE-2025-4343

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Vendor Pages for CVE-2025-4343 (1)

Same Patch Batch · D-Link · 2025-05-06 · 11 CVEs total

CVE-2025-4350 8.8 HIGH D-Link DIR-600L wake_on_lan command injection
CVE-2025-4349 8.8 HIGH D-Link DIR-600L formSysCmd command injection
CVE-2025-4348 8.8 HIGH D-Link DIR-600L formSetWanL2TP buffer overflow
CVE-2025-4347 8.8 HIGH D-Link DIR-600L formWlSiteSurvey buffer overflow
CVE-2025-4346 8.8 HIGH D-Link DIR-600L formSetWAN_Wizard534 buffer overflow
CVE-2025-4345 8.8 HIGH D-Link DIR-600L formSetLog buffer overflow
CVE-2025-4344 8.8 HIGH D-Link DIR-600L formLogin buffer overflow
CVE-2025-4342 8.8 HIGH D-Link DIR-600L formEasySetupWizard3 buffer overflow
CVE-2025-4341 6.3 MEDIUM D-Link DIR-880L Request Header ssdpcgi sub_16570 command injection
CVE-2025-4340 6.3 MEDIUM D-Link DIR-890L/DIR-806A1 soap.cgi sub_175C8 command injection

IV. Related Vulnerabilities

Same product: DIR-600L
Same vendor: D-Link
Same weakness: CWE-120

V. Comments for CVE-2025-4343

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