Information disclosure in Tenda Ac21
CVE-2026-2148
A security vulnerability has been detected in Tenda AC21 16.03.08.16. Affected is an unknown function of the file /cgi-bin/DownloadFlash of the component Web Management Interface. The manipulation leads to information disclosure. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (45.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.000
Affected products
- Tenda Ac21 — versions 16.03.08.16
- Tenda Ac21 Firmware — versions 16.03.08.16
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/master-abc/cve/issues/27 (issue-tracking, Exploit, Third Party Advisory, exploit, Issue Tracking)
- www.tenda.com.cn/ (Product, product)
Frequently asked questions
- What is CVE-2026-2148?
- CVE-2026-2148 is a medium-severity vulnerability in Tenda Ac21, classified under Information Disclosure. CVSS score: 5.3/10. Published 2026-02-08.
- How severe is CVE-2026-2148?
- Medium severity. CVSS v3 base score is 5.3 out of 10.