CVE-2026-27512

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.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://www.tendacn.com/product/F3	Product
https://www.vulncheck.com/advisories/tenda-f3-reflected-script-execution-via-missing-nosniff-header	Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:tenda:f3_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:tenda:f3:-:*:*:*:*:*:*:*

History

23 Feb 2026, 20:16

Type	Values Removed	Values Added
References	~~() https://www.tendacn.com/product/F3 -~~	() https://www.tendacn.com/product/F3 - Product
References	~~() https://www.vulncheck.com/advisories/tenda-f3-reflected-script-execution-via-missing-nosniff-header -~~	() https://www.vulncheck.com/advisories/tenda-f3-reflected-script-execution-via-missing-nosniff-header - Third Party Advisory
CPE		cpe:2.3:h:tenda:f3:-:::::::* cpe:2.3:o:tenda:f3_firmware::::::::
First Time		Tenda Tenda f3 Tenda f3 Firmware

23 Feb 2026, 17:23

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-23 17:23

Updated : 2026-02-23 20:16

NVD link : CVE-2026-27512

Mitre link : CVE-2026-27512

CVE.ORG link : CVE-2026-27512

JSON object : View

Products Affected

tenda

f3
f3_firmware

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-116

Improper Encoding or Escaping of Output

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