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CVE-2026-5983— D-Link DIR-605L POST Request formSetDDNS buffer overflow

Quick assessment

Affected
D-Link DIR-605L
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-605L是中国友讯（D-Link）公司的一款无线路由器。 D-Link DIR-605L 2.13B01版本存在安全漏洞，该漏洞源于对POST Request Handler组件中/goform/formSetDDNS文件formSetDDNS函数参数curTime的操作，可能导致缓冲区溢出。

CVSS 8.8 · High EPSS 0.68% · P49

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-5983

Vulnerability Information
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Vulnerability Title
D-Link DIR-605L POST Request formSetDDNS buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was determined in D-Link DIR-605L 2.13B01. This issue affects the function formSetDDNS of the file /goform/formSetDDNS of the component POST Request Handler. Executing a manipulation of the argument curTime can lead to buffer overflow. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized. 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-605L 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
D-Link DIR-605L是中国友讯（D-Link）公司的一款无线路由器。 D-Link DIR-605L 2.13B01版本存在安全漏洞，该漏洞源于对POST Request Handler组件中/goform/formSetDDNS文件formSetDDNS函数参数curTime的操作，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-605L 2.13B01 -

II. Public POCs for CVE-2026-5983

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III. Intelligence Information for CVE-2026-5983

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Vendor Pages for CVE-2026-5983 (1)

Same Patch Batch · D-Link · 2026-04-09 · 7 CVEs total

CVE-2026-5984 8.8 HIGH D-Link DIR-605L POST Request formSetLog buffer overflow
CVE-2026-5982 8.8 HIGH D-Link DIR-605L POST Request formAdvNetwork buffer overflow
CVE-2026-5981 8.8 HIGH D-Link DIR-605L POST Request formAdvFirewall buffer overflow
CVE-2026-5980 8.8 HIGH D-Link DIR-605L POST Request formSetMACFilter buffer overflow
CVE-2026-5979 8.8 HIGH D-Link DIR-605L POST Request formVirtualServ buffer overflow
CVE-2026-5844 7.2 HIGH D-Link DIR-882 HNAP1 SetNetworkSettings prog.cgi sprintf os command injection

IV. Related Vulnerabilities

Same product: DIR-605L
Same vendor: D-Link
Same weakness: CWE-120

V. Comments for CVE-2026-5983

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