Heap Buffer Overflow in NXP MCUXpresso SDK USB Middleware
CVE-2026-116488

7HIGH

Key Information:

Vendor

Nxp

Status
Mcuxsdk-middleware-usb
Vendor
CVE Published:
26 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-116488?

The NXP MCUXpresso SDK USB middleware contains a vulnerability that allows a malicious USB device to exploit a heap buffer overflow in the host audio, video, and CDC class drivers. This security issue arises from insufficient validation of device-supplied parameters, specifically bNumEndpoints and bLength values. When a crafted USB descriptor is presented, it can lead to the corruption of heap memory by writing beyond the fixed-size epList array. This may facilitate remote code execution or a denial-of-service attack on affected systems.

Affected Version(s)

mcuxsdk-middleware-usb 0 < 2.13.0

mcuxsdk-middleware-usb 2.13.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-116488
Created by D7EAD

References

https://github.com/nxp-mcuxpresso/mcuxsdk-middleware-usb/...
patch
https://github.com/nxp-mcuxpresso/mcuxsdk-middleware-usb/...
patch
https://github.com/nxp-mcuxpresso/mcuxsdk-middleware-usb/...
patch

CVSS V4

Score:
7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Physical
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

dread (d7ead)
.