What’s Vulnerable › Vulnerabilities
CVE-2026-91041: FileX fault-tolerant log replay writes past the destination sector when mounting a crafted FAT image
- Severity: high (CVSS 7.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-20 · updated 2026-10-20
- Weakness: CWE-787
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.
Affected products
- Eclipse Foundation Eclipse ThreadX - FileX: through 6.5.1.202602
References
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