CVE-2026-31255

A command injection vulnerability exists in Tenda AC18 V15.03.05.05_multi. The vulnerability is located in the /goform/SetSambaCfg interface, where improper handling of the guestuser parameter allows attackers to execute arbitrary system commands.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/izxnfirh8148/CVE_REQUESTS_references/blob/main/Tenda_AC18/Tenda_AC18_3th/README.md	Exploit Third Party Advisory
https://github.com/izxnfirh8148/CVE_REQUESTS_references/blob/main/Tenda_AC18/Tenda_AC18_3th/README.md	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:tenda:ac18_firmware:15.03.05.05:*:*:*:*:*:*:*

cpe:2.3:h:tenda:ac18:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-04-27 19:16

Updated : 2026-06-17 10:33

NVD link : CVE-2026-31255

Mitre link : CVE-2026-31255

CVE.ORG link : CVE-2026-31255

JSON object : View

Products Affected

tenda

ac18_firmware
ac18

CWE

CWE-77

Improper Neutralization of Special Elements used in a Command ('Command Injection')

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