EUVD-2026-70818
GHSA-6hpq-jhqf-p8v4
Severity by source
CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
AV:A for LAN-only adjacency, AC:H for Mesh mode prerequisite; PR:N as no authentication required; full C/I/A:H for potential root RCE.
Primary rating from Vendor (TPLink).
CVSS VectorVendor: TPLink
Lifecycle Timeline
2DescriptionCVE.org
A stack-based buffer overflow vulnerability exists in the EasyMesh module of TP-Link Archer AX55 v4. When Mesh mode is enabled, a LAN attacker may submit crafted input that causes the easymesh daemon to crash and may potentially achieve remote code execution on the device.
Successful exploitation may cause the EasyMesh daemon to crash and may potentially allow remote code execution when Mesh mode is enabled. This may result in high impact to the confidentiality, integrity, and availability of the affected device.
AnalysisAI
Stack-based buffer overflow in the EasyMesh daemon of the TP-Link Archer AX55 v4 allows a LAN-adjacent unauthenticated attacker to crash the easymesh process and potentially achieve remote code execution on the router, provided Mesh mode is enabled. The CVSS 4.0 vector (AV:A/AC:H/AT:P/PR:N) correctly constrains the attack to the local network segment with high complexity due to the Mesh mode prerequisite. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | EasyMesh (Mesh mode) must be explicitly enabled on the Archer AX55 v4 - this is a non-default configuration requiring deliberate user activation. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 7.7 reflects realistic exploitation constraints: AV:A limits the attack surface to hosts sharing the same LAN segment, ruling out direct internet-facing exploitation. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch is confirmed available - upgrade the Archer AX55 v4 to the latest firmware version from https://www.tp-link.com/us/support/download/archer-ax55/v4/#Firmware. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all TP-Link Archer AX55 v4 routers deployed in your environment with Mesh mode enabled and document current firmware versions. …
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More in Archer Ax55 V4
View allSame weakness CWE-121 – Stack-based Buffer Overflow
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External POC / Exploit Code
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