Buffer overflow in Eclipse Foundation Threadx - Filex
CVE-2026-91041
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-91041?
- CVE-2026-91041 is a high-severity vulnerability in Eclipse Foundation Threadx - Filex, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2026-10-20.
- How severe is CVE-2026-91041?
- High severity. CVSS v3 base score is 7.8 out of 10.