Vulnerability · Published Feb 8, 2026 · Assigned by VulDB
CVE-2026-2147Tenda AC21 Web Management DownloadLog 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 48% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.6%top 52.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A weakness has been identified in Tenda AC21 16.03.08.16. This impacts an unknown function of the file /cgi-bin/DownloadLog of the component Web Management Interface. Executing a manipulation can lead to information disclosure. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks.
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-344849 | Tenda AC21 Web Management DownloadLog information disclosure vdb-entry, technical-description
- VDB-344849 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- Submit #747429 | Tenda AC21 V16.03.08.16 Missing Critical Step in Authentication third-party-advisory
- https://github.com/master-abc/cve/issues/30 exploit, issue-tracking
- https://www.tenda.com.cn/ product