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CVE-2026-90606— Totolink A3002MU boa formIpv6Setup buffer overflow

Quick assessment

Affected
Totolink A3002MU
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.

TOTOLINK A3002MU是中国TOTOLINK公司的一款双频无线网络扩展器。 TOTOLINK A3002MU Hh-B20211125.1046版本存在缓冲区错误漏洞，该漏洞源于文件/boafrm/formIpv6Setup中formIpv6Setup函数对参数static_ipv6处理不当，导致缓冲区溢出，攻击者可远程利用。

CVSS 9.9 · Critical EPSS 0.85% · P58

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Totolink A3002MU Hh-B20211125.1046 affected
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I. Basic Information for CVE-2026-90606

Vulnerability Information
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Vulnerability Title
Totolink A3002MU boa formIpv6Setup buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A security vulnerability has been detected in Totolink A3002MU Hh-B20211125.1046. This issue affects the function formIpv6Setup of the file /boafrm/formIpv6Setup of the component boa. The manipulation of the argument static_ipv6 leads to buffer overflow. The attack is possible to be carried out remotely. The exploit has been disclosed publicly 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
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
TOTOLINK A3002MU 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK A3002MU是中国TOTOLINK公司的一款双频无线网络扩展器。 TOTOLINK A3002MU Hh-B20211125.1046版本存在缓冲区错误漏洞，该漏洞源于文件/boafrm/formIpv6Setup中formIpv6Setup函数对参数static_ipv6处理不当，导致缓冲区溢出，攻击者可远程利用。
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
Totolink A3002MU Hh-B20211125.1046 cpe:2.3:a:totolink:a3002mu:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-90606

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III. Intelligence Information for CVE-2026-90606

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Security Blog Posts for CVE-2026-90606 (1)

Same Patch Batch · Totolink · 2026-09-13 · 3 CVEs total

CVE-2026-90605 9.9 CRITICAL Totolink A3002MU boa formFilter buffer overflow
CVE-2026-90604 3.5 LOW Totolink A3002MU Anchor Tag cross site scripting

IV. Related Vulnerabilities

Same product: A3002MU
Same vendor: Totolink
Same weakness: CWE-120