CVE-2026-1638

MEDIUM 6.3

Tenda AC21 mDMZSetCfg command injection

CVSS Score

6.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-77 CWE-74
Vendor	tenda
Product	ac21
Published	Jan 29, 2026
Last Updated	Feb 23, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Tenda / AC21

1.1.1.1 1.dmzip 16.03.08.16

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/?id.343417 vuldb.com: https://vuldb.com/?ctiid.343417 vuldb.com: https://vuldb.com/?submit.740871 github.com: https://github.com/LX-LX88/cve/issues/26 tenda.com.cn: https://www.tenda.com.cn/

Credits

🔍 LX-LX (VulDB User)