EUVD-2026-31716
GHSA-2444-737h-93cr
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/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
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/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
Lifecycle Timeline
2DescriptionCVE.org
A flaw has been found in Edimax EW-7438RPn 1.31. This affects the function formStats of the file /goform/formStats. This manipulation of the argument submit-url causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
AnalysisAI
Stack-based buffer overflow in the Edimax EW-7438RPn Wi-Fi range extender (firmware 1.31) allows remote authenticated attackers to corrupt memory by submitting an oversized 'submit-url' argument to the formStats handler at /goform/formStats. Publicly available exploit code exists (VulDB-published PoC on GitHub), though EPSS estimates exploitation probability at only 0.04%. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Attacker requires network reachability to the device's web administration interface (typically TCP/80 on the LAN side) AND valid low-privileged web UI credentials per CVSS PR:L - exploitation is not achievable fully unauthenticated. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Signals are mixed and require careful weighting. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who has obtained valid web-admin credentials (commonly default 'admin' on consumer extenders) sends a crafted HTTP POST to /goform/formStats with an overlong 'submit-url' parameter. The oversized value overflows a stack buffer in the formStats handler, overwriting the saved return address and redirecting execution to attacker-controlled shellcode or a ROP chain, yielding code execution as the web server process (typically root on embedded firmware). … |
| Remediation | No vendor-released patch identified at time of analysis - Edimax did not respond to the coordinated disclosure attempt. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: inventory all deployed Edimax EW-7438RPn devices and verify firmware version 1.31 presence. …
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External POC / Exploit Code
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