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CVE-2026-4486— D-Link DIR-513 Web Service formEasySetPassword stack-based overflow

Quick assessment

Affected
D-Link DIR-513
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-513是中国友讯（D-Link）公司的一款无线路由器产品。 D-Link DIR-513 1.10版本存在安全漏洞，该漏洞源于组件Web Service的文件/goform/formEasySetPassword中函数formEasySetPassword对参数curTime的操作存在栈缓冲区溢出，可能导致执行任意代码。

CVSS 8.8 · High EPSS 1.07% · P64

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-4486

Vulnerability Information
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Vulnerability Title
D-Link DIR-513 Web Service formEasySetPassword stack-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in D-Link DIR-513 1.10. This affects the function formEasySetPassword of the file /goform/formEasySetPassword of the component Web Service. The manipulation of the argument curTime results in stack-based buffer overflow. The attack may be performed from remote. The exploit has been made public and could be used. 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
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
D-Link DIR-513 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
D-Link DIR-513是中国友讯（D-Link）公司的一款无线路由器产品。 D-Link DIR-513 1.10版本存在安全漏洞，该漏洞源于组件Web Service的文件/goform/formEasySetPassword中函数formEasySetPassword对参数curTime的操作存在栈缓冲区溢出，可能导致执行任意代码。
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-513 1.10 -

II. Public POCs for CVE-2026-4486

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III. Intelligence Information for CVE-2026-4486

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Vendor Advisories for CVE-2026-4486 (3)

Proof of Concept for CVE-2026-4486 (2)

Vendor Pages for CVE-2026-4486 (1)

Same Patch Batch · D-Link · 2026-03-20 · 3 CVEs total

CVE-2026-4499 7.3 HIGH D-Link DIR-820LW SSDP ssdpcgi_main os command injection
CVE-2026-4465 6.3 MEDIUM D-Link DIR-513 formSysCmd os command injection

IV. Related Vulnerabilities

Same product: DIR-513
Same vendor: D-Link
Same weakness: CWE-121

V. Comments for CVE-2026-4486

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