Description
Cudy TR3000 before 2.5.42 contains an OS command injection vulnerability that allows a malicious or compromised ACS to execute commands as root by supplying an unvalidated InternetGatewayDevice.User.{i}.Username value. Attackers can send a SetParameterValues request with shell metacharacters that set_UserUsername() in obuspa_system.lua passes to os.execute(), gaining root command execution.
Published: 2026-11-13
Score: 9.2 Critical
EPSS: 2.6% Low
KEV: No
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Remediation

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Advisories

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History

Fri, 13 Nov 2026 09:45:00 +0000

Type Values Removed Values Added
Description Cudy TR3000 before 2.5.42 contains an OS command injection vulnerability that allows a malicious or compromised ACS to execute commands as root by supplying an unvalidated InternetGatewayDevice.User.{i}.Username value. Attackers can send a SetParameterValues request with shell metacharacters that set_UserUsername() in obuspa_system.lua passes to os.execute(), gaining root command execution.
Title Cudy TR3000 before 2.5.42 OS Command Injection via TR-098 User Username
Weaknesses CWE-78
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-13T09:34:29.604Z

Reserved: 2026-11-11T22:57:48.492Z

Link: CVE-2026-126953

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-13T10:18:02.737

Modified: 2026-11-13T10:18:02.737

Link: CVE-2026-126953

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses