CVE-2026-9030: CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization in TP-Link Systems Inc. Archer A6 v4
CVE-2026-9030 is a denial-of-service vulnerability in the httpd service of TP-Link Systems Inc. Archer A6 v4. It arises from improper synchronization in handling asynchronous systool instructions, which can cause the httpd process or device management service to crash. Exploitation may lead to temporary loss of access to the web management interface or device reboot.
AI Analysis
Technical Summary
This vulnerability (CWE-362) involves concurrent execution using a shared resource with improper synchronization in the httpd service of Archer A6 v4 routers. Specifically, the asynchronous systool instruction handling path does not safely manage concurrent operations, allowing crafted instructions to cause a crash of the httpd process or device management service. This results in denial-of-service conditions such as temporary loss of web interface access or device reboot.
Potential Impact
Successful exploitation causes denial-of-service by crashing the httpd process or device management service, leading to temporary unavailability of the web management interface or device reboot. There is no indication of privilege escalation, data disclosure, or persistent compromise.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is currently available. Until a patch is released, restrict access to the device management interface to trusted networks and monitor for unusual device behavior.
CVE-2026-9030: CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization in TP-Link Systems Inc. Archer A6 v4
Description
CVE-2026-9030 is a denial-of-service vulnerability in the httpd service of TP-Link Systems Inc. Archer A6 v4. It arises from improper synchronization in handling asynchronous systool instructions, which can cause the httpd process or device management service to crash. Exploitation may lead to temporary loss of access to the web management interface or device reboot.
CVSS v4.0
Score 6.8medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-362) involves concurrent execution using a shared resource with improper synchronization in the httpd service of Archer A6 v4 routers. Specifically, the asynchronous systool instruction handling path does not safely manage concurrent operations, allowing crafted instructions to cause a crash of the httpd process or device management service. This results in denial-of-service conditions such as temporary loss of web interface access or device reboot.
Potential Impact
Successful exploitation causes denial-of-service by crashing the httpd process or device management service, leading to temporary unavailability of the web management interface or device reboot. There is no indication of privilege escalation, data disclosure, or persistent compromise.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is currently available. Until a patch is released, restrict access to the device management interface to trusted networks and monitor for unusual device behavior.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- TPLink
- Date Reserved
- 2026-05-19T16:30:33.339Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a76468dbf8831d53924fd98
Added to database: 08/07/2026, 20:56:45 UTC
Last enriched: 08/07/2026, 21:14:32 UTC
Last updated: 08/07/2026, 21:32:58 UTC
Views: 4
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