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CVE-2026-27512— Tenda F3 Reflected Script Execution via Missing nosniff Header

Quick assessment

Affected
Shenzhen Tenda Technology Co., Ltd. Tenda F3
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 F3是中国腾达（Tenda）公司的一款无线路由器。 Tenda F3 V12.01.01.55_multi版本存在安全漏洞，该漏洞源于管理界面响应缺少X-Content-Type-Options标头，可能导致内容类型混淆攻击。

CVSS 6.1 · Medium EPSS 0.33% · P23

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
Shenzhen Tenda Technology Co., Ltd. Tenda F3 ≤ 12.01.01.55_multi affected
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I. Basic Information for CVE-2026-27512

Vulnerability Information
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Vulnerability Title
Tenda F3 Reflected Script Execution via Missing nosniff Header
Source: CVE Program / CVE List V5
Vulnerability Description
Shenzhen Tenda F3 Wireless Router firmware V12.01.01.55_multi contains a content-type confusion vulnerability in the administrative interface. Responses omit the X-Content-Type-Options: nosniff header and include attacker-influenced content that can be reflected into the response body. Under affected browser behaviors, MIME sniffing may cause the response to be interpreted as active HTML, enabling script execution in the context of the administrative interface.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Tenda F3 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tenda F3是中国腾达（Tenda）公司的一款无线路由器。 Tenda F3 V12.01.01.55_multi版本存在安全漏洞，该漏洞源于管理界面响应缺少X-Content-Type-Options标头，可能导致内容类型混淆攻击。
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
Shenzhen Tenda Technology Co., Ltd. Tenda F3 0 ~ 12.01.01.55_multi -

II. Public POCs for CVE-2026-27512

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III. Intelligence Information for CVE-2026-27512

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Same Patch Batch · Shenzhen Tenda Technology Co., Ltd. · 2026-02-23 · 4 CVEs total

CVE-2026-27514 6.5 MEDIUM Tenda F3 Plaintext Credential Exposure in Configuration Download
CVE-2026-27513 4.3 MEDIUM Tenda F3 CSRF in Web Management Interface
CVE-2026-27511 4.3 MEDIUM Tenda F3 Clickjacking in Web Management Interface

IV. Related Vulnerabilities

Same product: Tenda F3
Same vendor: Shenzhen Tenda Technology Co., Ltd.
Same weakness: CWE-79

V. Comments for CVE-2026-27512

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