CVE-2025-55099 Potential out-of-bounds read in _ux_host_class_audio_alternate_setting_locate()
An attacker can trigger an out-of-bounds read in the USBX audio class driver via a malicious USB descriptor, potentially causing a crash or leaking memory.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-55099?
CVE-2025-55099 is a low-severity memory corruption vulnerability in Eclipse Foundation USBX, published on 17 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In USBX before 6.4.3, the USB support module for Eclipse Foundation ThreadX, there was a potential out of bound read issue in _ux_host_class_audio_alternate_setting_locate() when parsing a descriptor with attacker-controlled frequency fields.
Weakness: CWE-125
Which versions are affected by CVE-2025-55099?
It affects 1 product.
Products include Eclipse Threadx Usbx.
How do I fix CVE-2025-55099?
No fix has been published for CVE-2025-55099 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-55099 being exploited?
There is no known exploitation of CVE-2025-55099 in the wild and no public exploit code.
Other vulnerabilities in Eclipse Foundation USBX
- CVE-2022-29246 Potential buffer overflow in function DFU upload in Azure RTOS USBX
- CVE-2022-39293 Azure RTOS USBX Host PIMA vulnerable to read integer underflow with buffer overflow
- CVE-2022-36063 USBX Host CDC ECM integer underflow with buffer overflow
- CVE-2022-29223 Buffer overflow on HUB descriptor in Azure RTOS USBX
- CVE-2023-48695 Azure RTOS USBX Remote Code Execution Vulnerability