All vulnerabilities
CVE-2026-91041GHSA-c8cj-fj9j-426v

FileX fault-tolerant log replay writes past the destination sector when mounting a crafted FAT image

Eclipse Foundation Eclipse ThreadX - FileX
Open in ThreatlineRecord JSON
CVSS
7.8High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.16%Chance of exploitation activity in the next 30 days, higher than 5% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published20 Oct 2026Updated 20 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

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.

Text from CVE List

Affected versions 2

  • Eclipse ThreadX - FileXaffected: all versions through 6.5.1.202602CVE List
  • Eclipse ThreadX - FileXunaffected: 6.5.2.202603CVE List

References 1