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CVE-2026-1638

Tenda AC21 mDMZSetCfg command injection

Published: Jan 29, 2026Updated: Apr 29, 2026 Sources: CVE List NVDCWE-74
6.3MEDIUM
NVD MITRE
EPSS Score
2.0%
Top 20.8%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
No Fix Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:LI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-74CWE-77

Affected Products

Tenda
commercial·CN
AC21
Networking Infrastructure
ac21 firmware
Networking Infrastructure

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://vuldb.com/?id.343417
vuldb.com
https://vuldb.com/?ctiid.343417
vuldb.com
https://vuldb.com/?submit.740871
vuldb.com
and 2 more references View all →

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