CVE-2026-18167: CWE-121 Stack-based buffer overflow in TP-Link Systems Inc. Archer AX55 v4
Description
A stack-based buffer overflow vulnerability exists in the EasyMesh module of TP-Link Archer AX55 v4 routers. When Mesh mode is enabled, a LAN attacker can submit crafted input to cause the easymesh daemon to crash and potentially achieve remote code execution. This vulnerability impacts the confidentiality, integrity, and availability of the device.
CVSS v4.0
Score 7.7high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-18167 is a stack-based buffer overflow vulnerability in the EasyMesh module of TP-Link Archer AX55 v4. The flaw is triggered when Mesh mode is enabled and a local attacker on the LAN submits specially crafted input to the easymesh daemon. Successful exploitation can cause the daemon to crash and may allow remote code execution on the device, leading to a high impact on device security.
Potential Impact
Exploitation may result in denial of service due to daemon crashes and potentially remote code execution, compromising the confidentiality, integrity, and availability of the affected device.
Mitigation Recommendations
No patch or official fix information is currently available. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is released, disabling Mesh mode may reduce exposure to this vulnerability.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-6hpq-jhqf-p8v4
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-18167"]
- Database Specific Severity
- HIGH
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a9ad4fcacd9273b49b67b01
Added to database: 09/04/2026, 14:26:04 UTC
Last enriched: 09/07/2026, 14:07:25 UTC
Last updated: 10/18/2026, 18:48:18 UTC
Views: 38
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