CVE-2026-91041— FileX fault-tolerant log replay writes past the destination sector when mounting a crafted FAT image
Quick assessment
Affected
Eclipse Foundation Eclipse ThreadX - FileX
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
挂载由攻击者控制的启用了容错功能的 FAT 镜像时，在日志回放过程中会引发堆越界写入。该写入的位置和数值均由攻击者控制；在常见的嵌入式内存布局中，该写入会覆盖 FX_MEDIA 驱动程序的回调函数指针，从而使攻击者能够控制指令指针（EIP/RIP）。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-91041
Vulnerability Information
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Vulnerability Title
FileX fault-tolerant log replay writes past the destination sector when mounting a crafted FAT image
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Eclipse Foundation | Eclipse ThreadX - FileX | 0 ~ 6.5.1.202602 | - |
|
II. Public POCs for CVE-2026-91041
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2026-91041 (1)
Same Patch Batch · Eclipse Foundation · 2026-10-20 · 29 CVEs total
| CVE-2026-113620 | 9.8 CRITICAL | Eclipse ioFog operator WebSocket accepts an unverified JWT |
| CVE-2026-93475 | 9.3 CRITICAL | Out-of-bounds Write via an Unbounded RSA Modulus in NetX Secure X.509 |
| CVE-2026-94018 | 8.8 HIGH | NetX Duo Web HTTP server releases an uninitialized packet pointer on the PUT Content-Lengt |
| CVE-2026-92853 | 8.7 HIGH | Out-of-bounds Read via a Zero-length TLS 1.3 Certificate Message in NetX Secure |
| CVE-2026-92843 | 8.7 HIGH | Out-of-bounds Read via the TLS 1.3 Certificate extensions_length in NetX Secure |
| CVE-2026-95109 | 8.5 HIGH | Cortex-A7 module data validation checks only the first address of a caller-supplied range |
| CVE-2026-94192 | 8.5 HIGH | Module object deallocation can free a live ThreadX kernel object |
| CVE-2026-91186 | 8.4 HIGH | PNG decoder: a duplicate IHDR chunk after IDAT resizes the image after allocation, causing |
| CVE-2026-113619 | 7.5 HIGH | Eclipse ioFog renders request templates before authentication |
| CVE-2026-91189 | 7.1 HIGH | GUIX binary resource loader: unvalidated glyph range causes an integer underflow and a hea |
| CVE-2026-95107 | 7.0 HIGH | Module object allocation size overflow corrupts the manager object pool |
| CVE-2026-93003 | 6.9 MEDIUM | NetX Duo Web HTTP server interprets request body content as HTTP header fields |
| CVE-2026-108062 | 6.9 MEDIUM | Pre-authentication OIDC discovery and JWKS fetches run synchronously on the asyncio event |
| CVE-2026-94023 | 6.9 MEDIUM | Module delete dispatchers do not enforce kernel-object ownership before irreversible delet |
| CVE-2026-94024 | 6.9 MEDIUM | Module Manager object lookup validates one byte of a module's search name |
| CVE-2026-91059 | 6.8 MEDIUM | JPEG decoder: a duplicate SOF0 after SOS publishes a pixelmap that misreports its own allo |
| CVE-2026-92449 | 6.8 MEDIUM | Binary resource loader: unbounded map_id from a theme file causes a heap out-of-bounds wri |
| CVE-2026-92446 | 6.8 MEDIUM | GUIX binary resource loader reads past the end of a resource, because no length for it eve |
| CVE-2026-95108 | 6.8 MEDIUM | Deleting a user-mode module thread leaks its privileged kernel stack |
| CVE-2026-97400 | 6.8 MEDIUM | jdmpview / DTFJ reads arbitrary local files and makes arbitrary outbound requests when ope |
Showing top 20 of 29 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same vendor: Eclipse Foundation
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Deleting a user-mode module thread leaks its privileged kern -
CVE-2026-94024
Module Manager object lookup validates one byte of a module'
Same weakness: CWE-787
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V. Comments for CVE-2026-91041
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