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CVE-2026-51843

Quick assessment

Affected
n/a n/a
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 ac7是中国Tenda公司的一款双频千兆无线路由器。 Tenda AC7 15.03.06.44版本存在安全漏洞，该漏洞源于/goform/AdvSetMacMtuWan接口的wanMTU参数存在栈缓冲区溢出。

AI Predicted 8.1 Difficulty: Easy EPSS 0.56% · P45

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
n/a n/a n/a affected
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I. Basic Information for CVE-2026-51843

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Tenda AC7 v15.03.06.44 contains a stack buffer overflow vulnerability in the /goform/AdvSetMacMtuWan interface via the wanMTU parameter.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Tenda AC7 缓冲区溢出漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tenda ac7是中国Tenda公司的一款双频千兆无线路由器。 Tenda AC7 15.03.06.44版本存在安全漏洞，该漏洞源于/goform/AdvSetMacMtuWan接口的wanMTU参数存在栈缓冲区溢出。
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
- n/a n/a -

II. Public POCs for CVE-2026-51843

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-51843

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Security Blog Posts for CVE-2026-51843 (1)

Same Patch Batch · n/a · 2026-06-19 · 6 CVEs total

CVE-2026-12644 5.3 MEDIUM Voodoo Creation TypeScript Deep Merge 异常处理不当漏洞
CVE-2025-62821 Microsoft HEIF Image Extensions 安全漏洞
CVE-2026-51846 Tenda AC7 安全漏洞
CVE-2026-51844 Tenda AC7 缓冲区溢出漏洞
CVE-2026-51845 Tenda AC7 缓冲区溢出漏洞

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2026-51843

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