Tenda AC21 mDMZSetCfg command injection_CVE-2026-1638

5.3 / 10

MEDIUM

CVSS: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

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.

Basic Information

ID CVE-2026-1638

Source VulDB

Published Jan 29, 2026 at 23:32

Affected Product

Vendor Tenda

Product AC21

Version 1.1.1.1

Affected Versions Tenda AC21 1.1.1.1
Tenda AC21 1.dmzip
Tenda AC21 16.03.08.16

CWE Classification

CWE-77 CWE-74

References

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    "lastseen": "",
    "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": "2026-01-29T23:32:11.350Z",
    "modified": "2026-01-29T23:32:11.350Z",
    "type": "cve",
    "title": "Tenda AC21 mDMZSetCfg command injection",
    "source": "VulDB",
    "references": "https://vuldb.com/?id.343417\nhttps://vuldb.com/?ctiid.343417\nhttps://vuldb.com/?submit.740871\nhttps://github.com/LX-LX88/cve/issues/26\nhttps://www.tenda.com.cn/",
    "id": "CVE-2026-1638",
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    "sourceData": "Tenda AC21 1.1.1.1\nTenda AC21 1.dmzip\nTenda AC21 16.03.08.16",
    "sourceHref": "",
    "cvss": {
        "score": 5.3,
        "severity": "MEDIUM",
        "vector": "CVSS: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",
        "version": "4.0"
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        "cvssV3": {
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    "product": "AC21",
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