What is CVE-2026-27512?

CVE-2026-27512 is a medium-severity vulnerability in Shenzhen Tenda Technology Co., Ltd. F3, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-02-23.

How severe is CVE-2026-27512?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Shenzhen Tenda Technology Co., Ltd. F3

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (8.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Shenzhen Tenda Technology Co., Ltd. F3 — versions 0
Tenda F3
Tenda F3_firmware

Weakness classification (CWE)

References

disclosure@vulncheck.com (Product, product)
disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-27512?: CVE-2026-27512 is a medium-severity vulnerability in Shenzhen Tenda Technology Co., Ltd. F3, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-02-23.
How severe is CVE-2026-27512?: Medium severity. CVSS v3 base score is 6.1 out of 10.