CVE-2025-55095The function _ux_host_class_storage_media_mount() is responsible for mounting partitions on a USB mass storage device.
Updated under an hour ago ()
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It affects Eclipse Foundation Eclipse ThreadX - USBX and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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The function _ux_host_class_storage_media_mount() is responsible for mounting partitions on a USB mass storage device. When it encounters an extended partition entry in the partition table, it recursively calls itself to mount the next logical partition. This recursion occurs in _ux_host_class_storage_partition_read(), which parses up to four partition entries. If an extended partition is found (with type UX_HOST_CLASS_STORAGE_PARTITION_EXTENDED or EXTENDED_LBA_MAPPED), the code invokes: _ux_host_class_storage_media_mount(storage, sector + _ux_utility_long_get(...)); There is no limit on the recursion depth or tracking of visited sectors. As a result, a malicious or malformed disk image can include cyclic or excessively deep chains of extended partitions, causing the function to recurse until stack overflow occurs.
- CVSS
- 4.2 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L
- Weakness (CWE)
- CWE-121, CWE-674
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- eclipse
- NVD analysis
- Analyzed
- Record last updated
- Jan 27, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
The CVE record on cve.org NVD's entry
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