Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-4961— Tenda AC6 POST Request QuickIndex formQuickIndex stack-based overflow

Quick assessment

Affected
Tenda AC6
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.

Tenda AC6是中国腾达（Tenda）公司的一款无线路由器。 Tenda AC6 15.03.05.16版本存在安全漏洞，该漏洞源于对文件/goform/QuickIndex中参数PPPOEPassword的错误操作，可能导致基于栈的缓冲区溢出。

CVSS 8.8 · High EPSS 1.01% · P62
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-4961

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Tenda AC6 POST Request QuickIndex formQuickIndex stack-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was identified in Tenda AC6 15.03.05.16. Affected by this vulnerability is the function formQuickIndex of the file /goform/QuickIndex of the component POST Request Handler. The manipulation of the argument PPPOEPassword leads to stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit is publicly available and might be used.
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
Tenda AC6 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tenda AC6是中国腾达（Tenda）公司的一款无线路由器。 Tenda AC6 15.03.05.16版本存在安全漏洞，该漏洞源于对文件/goform/QuickIndex中参数PPPOEPassword的错误操作，可能导致基于栈的缓冲区溢出。
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
Tenda AC6 15.03.05.16 cpe:2.3:o:tenda:ac6_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-4961

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-4961

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-4961 (2)

News Coverage for CVE-2026-4961 (1)

Same Patch Batch · Tenda · 2026-03-27 · 5 CVEs total

CVE-2026-4906 8.8 HIGH Tenda AC5 POST Request WizardHandle decodePwd stack-based overflow
CVE-2026-4960 8.8 HIGH Tenda AC6 POST Request WizardHandle fromWizardHandle stack-based overflow
CVE-2026-4974 8.8 HIGH Tenda AC7 POST Request SetSysTimeCfg fromSetSysTime memory corruption
CVE-2026-4975 8.8 HIGH Tenda AC15 POST Request setcfm formSetCfm memory corruption

IV. Related Vulnerabilities

Same product: AC6
Same vendor: Tenda
Same weakness: CWE-121

V. Comments for CVE-2026-4961

No comments yet

Leave a comment