CVE-2026-91041 — HIGH (7.8)

Vulnerability 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.

CVSS Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-1284 CWE-787

References

https://github.com/eclipse-threadx/filex/security/advisories/GHSA-c8cj-fj9j-426v

FAQ

What is CVE-2026-91041?

CVE-2026-91041 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 embed...

How severe is CVE-2026-91041?

CVE-2026-91041 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-91041?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.