Vulnerability · Published Feb 8, 2026 · Assigned by VulDB
CVE-2026-2148Tenda AC21 Web Management DownloadFlash information disclosure
Medium 5.3
In plain English
A medium-severity information exposure in AC21 from Tenda. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.6%top 51.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
Weakness: CWE-200, CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:W/RC:R
References
- VDB-344850 | Tenda AC21 Web Management DownloadFlash information disclosure vdb-entry, technical-description
- VDB-344850 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- Submit #747557 | Tenda AC21 V16.03.08.16 Missing Critical Step in Authentication third-party-advisory
- https://github.com/master-abc/cve/issues/27 exploit, issue-tracking
- https://www.tenda.com.cn/ product