CVE-2026-5509: CWE-20 Improper Input Validation in TP-Link Systems Inc. Archer BE7200 V1
An authenticated command injection vulnerability exists in the Archer BE450 v1 and BE7200 v1 router that allows an administrator to execute arbitrary system commands through the web management interface. After successfully authenticating to the admin interface, an attacker can leverage the browser’s developer console by supplying a crafted input that is passed to backend system commands without adequate sanitization. Successful exploitation enables execution of arbitrary commands with elevated privileges on the device, which may allow the attacker to start unauthorized services, modify system configuration, or otherwise fully compromise the router’s operating environment.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-5509) affects TP-Link Archer BE7200 V1 and BE450 V1 routers. It arises from improper input validation (CWE-20) in the web management interface, where authenticated administrators can inject arbitrary system commands via crafted inputs processed without adequate sanitization. Successful exploitation grants elevated privileges on the device, allowing attackers to execute arbitrary commands, modify system configurations, or start unauthorized services. The CVSS v4.0 score is 8.5, indicating high severity. No patch or official remediation level has been provided by TP-Link as of the publication date.
Potential Impact
Exploitation requires administrator authentication to the router’s web interface. Once exploited, attackers can execute arbitrary system commands with elevated privileges, potentially leading to full compromise of the router. This includes unauthorized service execution and system configuration changes, which can disrupt network operations or facilitate further attacks. There are no known exploits in the wild currently.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict administrative access to the router’s web interface to trusted personnel only and monitor for unauthorized access. Avoid using the affected router models in high-risk environments if possible. Follow updates from TP-Link for any forthcoming patches or mitigations.
CVE-2026-5509: CWE-20 Improper Input Validation in TP-Link Systems Inc. Archer BE7200 V1
Description
An authenticated command injection vulnerability exists in the Archer BE450 v1 and BE7200 v1 router that allows an administrator to execute arbitrary system commands through the web management interface. After successfully authenticating to the admin interface, an attacker can leverage the browser’s developer console by supplying a crafted input that is passed to backend system commands without adequate sanitization. Successful exploitation enables execution of arbitrary commands with elevated privileges on the device, which may allow the attacker to start unauthorized services, modify system configuration, or otherwise fully compromise the router’s operating environment.
CVSS v4.0
Score 8.5high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-5509) affects TP-Link Archer BE7200 V1 and BE450 V1 routers. It arises from improper input validation (CWE-20) in the web management interface, where authenticated administrators can inject arbitrary system commands via crafted inputs processed without adequate sanitization. Successful exploitation grants elevated privileges on the device, allowing attackers to execute arbitrary commands, modify system configurations, or start unauthorized services. The CVSS v4.0 score is 8.5, indicating high severity. No patch or official remediation level has been provided by TP-Link as of the publication date.
Potential Impact
Exploitation requires administrator authentication to the router’s web interface. Once exploited, attackers can execute arbitrary system commands with elevated privileges, potentially leading to full compromise of the router. This includes unauthorized service execution and system configuration changes, which can disrupt network operations or facilitate further attacks. There are no known exploits in the wild currently.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict administrative access to the router’s web interface to trusted personnel only and monitor for unauthorized access. Avoid using the affected router models in high-risk environments if possible. Follow updates from TP-Link for any forthcoming patches or mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- TPLink
- Date Reserved
- 2026-04-03T16:59:38.570Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a172e7fe29bf47b50d78acd
Added to database: 5/27/2026, 5:48:47 PM
Last enriched: 5/27/2026, 6:03:29 PM
Last updated: 5/27/2026, 6:52:15 PM
Views: 5
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