CVE-2026-91041
High
Description
Mounting an attacker-controlled FAT image with fault tolerance enabled causes an out-of-bounds heap write during log replay. The write is attacker-positioned and attacker-valued, and on a common embedded memory layout it reaches the FX_MEDIA driver callback, giving control of the instruction pointer.
SeverityHigh
CVSS7.8
Exploit probability—
ProductEclipse ThreadX - FileX
PublishedOct 20, 2026
First seenOct 20, 2026
Weakness typeCWE-787Out-of-bounds writeCWE-1284CWE-1284
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Eclipse Foundation Eclipse ThreadX - FileX | v ≤ 6.5.1.202602 | — |
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