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Description

A security flaw has been discovered in Tenda AC21 1.1.1.1/1.dmzip/16.03.08.16. The impacted element is the function mDMZSetCfg of the file /goform/mDMZSetCfg. The manipulation of the argument dmzIp results in command injection. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.

PUBLISHED Reserved 2026-01-29 | Published 2026-01-29 | Updated 2026-02-23 | Assigner VulDB




MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
MEDIUM: 6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
MEDIUM: 6.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
6.5AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

Command Injection

Injection

Product status

1.1.1.1
affected

1.dmzip
affected

16.03.08.16
affected

Timeline

2026-01-29:Advisory disclosed
2026-01-29:VulDB entry created
2026-02-05:VulDB entry last update

Credits

LX-LX (VulDB User) reporter

References

vuldb.com/?id.343417 (VDB-343417 | Tenda AC21 mDMZSetCfg command injection) vdb-entry technical-description

vuldb.com/?ctiid.343417 (VDB-343417 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/?submit.740871 (Submit #740871 | Tenda AC21 V16.03.08.16 Command Injection) third-party-advisory

github.com/LX-LX88/cve/issues/26 broken-link exploit issue-tracking

www.tenda.com.cn/ product

cve.org (CVE-2026-1638)

nvd.nist.gov (CVE-2026-1638)

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