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CVE-2026-90692— D-Link DIR-878 Dynamic DNS IPv6 Settings SetDynamicDNSIPv6Settings stack-based overflow

Quick assessment

Affected
D-Link DIR-878
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 DIR-878（固件版本 120B05）中检测到一个漏洞。该漏洞影响组件“动态 DNS IPv6 设置”中的 函数。当参数 被操纵时，会导致基于栈的缓冲区溢出。攻击者可远程发起此攻击。

CVSS 9.9 · Critical

Possible ATT&CK Techniques 1 AI

T1205 · Traffic Signaling
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I. Basic Information for CVE-2026-90692

Vulnerability Information
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Vulnerability Title
D-Link DIR-878 Dynamic DNS IPv6 Settings SetDynamicDNSIPv6Settings stack-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was detected in D-Link DIR-878 120B05. This affects the function SetDynamicDNSIPv6Settings of the component Dynamic DNS IPv6 Settings. The manipulation of the argument IPv6Address/Hostname results in stack-based buffer overflow. The attack may be launched remotely.
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
栈缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
D-Link DIR-878 120B05 cpe:2.3:h:d-link:dir-878:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-90692

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III. Intelligence Information for CVE-2026-90692

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Vendor Pages for CVE-2026-90692 (1)

Other References for CVE-2026-90692 (1)

Same Patch Batch · D-Link · 2026-09-14 · 7 CVEs total

CVE-2026-90699 9.9 CRITICAL D-Link DWR-M920 formPinManageSetup sub_41E60C os command injection
CVE-2026-90693 9.9 CRITICAL D-Link DIR-878 WAN Settings SetWan3Settings stack-based overflow
CVE-2026-90680 9.9 CRITICAL D-Link DIR-823G HNAP1 SetStaticRouteSettings strcpy stack-based overflow
CVE-2026-90703 9.1 CRITICAL D-Link DWR-M921 formDiskCreateShare system os command injection
CVE-2026-90702 9.1 CRITICAL D-Link DWR-M921 formDiskFormat system os command injection
CVE-2026-90704 6.6 MEDIUM D-Link DWR-M921 formDiskPartition system command injection

IV. Related Vulnerabilities

Same product: DIR-878
Same vendor: D-Link
Same weakness: CWE-121

V. Comments for CVE-2026-90692

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