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HighPublic exploit

Buffer Overflow in Edimax BR-6478AC 1.23 formUSBAccount POST Handler

IdentifiersCVE-2026-10163CWE-120· Buffer Copy without Checking Size…

CVE-2026-10163 is a remotely exploitable buffer overflow vulnerability in Edimax BR-6478AC firmware version 1.23. The flaw is in the formUSBAccount function exposed through the /goform/formUSBAccount POST request handler. According to the available information, improper handling of the UserName and Password parameters allows crafted input to overflow a buffer. The issue is reachable over the network and a public exploit has been disclosed. The record also maps the issue to CWE-119/CWE-120, consistent with classic out-of-bounds memory corruption caused by insufficient bounds checking on copied input.

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ANALYST BRIEF

Impact, mitigation & remediation

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Impact

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Successful exploitation can cause memory corruption in the affected router process. Based on the available advisory and CVSS assessments, impact may include denial of service and potentially arbitrary code execution on the device, with high confidentiality, integrity, and availability impact on the vulnerable system. Because exploitation is remote and public exploit material is available, the risk of operational abuse is elevated.

Mitigation

If you can’t patch tonight, do this now.

If no patch is available, restrict access to the device management interface and specifically reduce exposure of the /goform/formUSBAccount endpoint. Limit administrative access to trusted networks only, disable remote administration if not required, place the device behind network access controls, and monitor for suspicious POST requests targeting the vulnerable handler with unusually long UserName or Password fields.

Remediation

Patch, then assume compromise.

Upgrade Edimax BR-6478AC to a vendor-fixed firmware release if one becomes available. If the vendor has issued updated firmware or a security advisory, apply that fix as the primary remediation. Validate that the /goform/formUSBAccount handler no longer accepts overlong UserName or Password values without proper bounds enforcement after patching.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

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VendorProductType
EdimaxBr-6478achardware
EdimaxBr-6478ac Firmwareoperating_system

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Social activity5

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