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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.

PUBLISHED Reserved 2026-02-07 | Published 2026-02-08 | Updated 2026-02-23 | Assigner VulDB




MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:W/RC:R
MEDIUM: 5.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:W/RC:R
5.0AV:N/AC:L/Au:N/C:P/I:N/A:N/E:POC/RL:W/RC:UR

Problem types

Information Disclosure

Improper Access Controls

Product status

16.03.08.16
affected

Timeline

2026-02-07:Advisory disclosed
2026-02-07:VulDB entry created
2026-02-11:VulDB entry last update

Credits

jiefengliang (VulDB User) reporter

References

vuldb.com/?id.344850 (VDB-344850 | Tenda AC21 Web Management DownloadFlash information disclosure) vdb-entry technical-description

vuldb.com/?ctiid.344850 (VDB-344850 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/?submit.747557 (Submit #747557 | Tenda AC21 V16.03.08.16 Missing Critical Step in Authentication) third-party-advisory

github.com/master-abc/cve/issues/27 exploit issue-tracking

www.tenda.com.cn/ product

cve.org (CVE-2026-2148)

nvd.nist.gov (CVE-2026-2148)

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