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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.003 (23.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
Weakness classification (CWE)
References
- www.tendacn.com/product/F3 (Product, product)
- www.vulncheck.com/advisories/tenda-f3-reflected-script-execution-via-missing-no… (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.