CVE-2026-27512

MEDIUM 6.1

Tenda F3 Reflected Script Execution via Missing nosniff Header

CVSS Score

6.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79 CWE-116
Vendor	shenzhen tenda technology co., ltd.
Product	tenda f3
Published	Feb 23, 2026
Last Updated	Mar 5, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

Shenzhen Tenda Technology Co., Ltd. / Tenda F3

0 ≤ 12.01.01.55_multi

References

NVD ↗ CVE.org ↗ EPSS Data ↗

tendacn.com: https://www.tendacn.com/product/F3 vulncheck.com: https://www.vulncheck.com/advisories/tenda-f3-reflected-script-execution-via-missing-nosniff-header

Credits

Kazuma Matsumoto, a security researcher at GMO Cybersecurity by IERAE, Inc.