CVE-2026-9030: CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization in TP-Link Systems Inc. Archer A6 v4
A denial-of-service vulnerability exists in httpd service on Archer A6 v4 where the asynchronous systool instruction handlng path in httpd does not properly synchronize or safely manage concurrent systool operations. By sending crafted systool instructions through the asynchronous request path, successful exploitation may cause the httpd process or device management service to crash and may result in 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 TP-Link Archer A6 v4. Specifically, the asynchronous systool instruction handling path does not safely manage concurrent operations, allowing crafted instructions to cause crashes in 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 can cause the httpd process or device management service to crash, resulting in denial-of-service. This may temporarily disrupt access to the device's web management interface or cause the device to reboot, impacting device availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround has been documented at this time.
CVE-2026-9030: CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization in TP-Link Systems Inc. Archer A6 v4
Description
A denial-of-service vulnerability exists in httpd service on Archer A6 v4 where the asynchronous systool instruction handlng path in httpd does not properly synchronize or safely manage concurrent systool operations. By sending crafted systool instructions through the asynchronous request path, successful exploitation may cause the httpd process or device management service to crash and may result in temporary loss of access to the web management interface or device reboot.
CVSS v4.0
Score 6.8medium
Affected software
TP-Link Systems Inc.
Archer A6 v4
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 TP-Link Archer A6 v4. Specifically, the asynchronous systool instruction handling path does not safely manage concurrent operations, allowing crafted instructions to cause crashes in 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 can cause the httpd process or device management service to crash, resulting in denial-of-service. This may temporarily disrupt access to the device's web management interface or cause the device to reboot, impacting device availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround has been documented at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- TPLink
- Date Reserved
- 2026-05-19T16:30:33.339Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a76468dbf8831d53924fd98
Added to database: 08/07/2026, 20:56:45 UTC
Last enriched: 08/15/2026, 15:14:52 UTC
Last updated: 09/21/2026, 22:01:39 UTC
Views: 56
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.