TI-2025-34770 Aliases CVE-2025-55080

Improper Parameter Check in ThreadX Syscall Implementation

LOW 33CWE-233Published 2025-10-15 · Updated 2025-10-15

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: Present
Impact type: —
Confidentiality · integrity · availability: High · High · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

In Eclipse ThreadX before 6.4.3, when memory protection is enabled, syscall parameters verification wasn't enough, allowing an attacker to obtain an arbitrary memory read/write.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00141 3rd percentileScored 2026-11-07

Fix Fixed ThreadX (Eclipse Foundation): 6.4.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Eclipse Foundation	ThreadX	before 6.4.3	6.4.3	Patch available	CNA

ThreadX VendorEclipse Foundation Affected before 6.4.3 Fixed in 6.4.3 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:eclipse:threadx::::::::	before 6.4.3	Vulnerable	Eclipse Foundation

cpe:2.3:a:eclipse:threadx:*:*:*:*:*:*:*:* Versions before 6.4.3 Vulnerable ·Eclipse Foundation

Remediation

Fix · CNA ThreadX (Eclipse Foundation) Fixed in 6.4.3

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2025-10-15
Eclipse Foundation ThreadX 6.4.3
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2025-34769 Missing check for thread priorityPriority LOW 25
Show all 2 records →

Timeline

2026-10-02 Threatist record created from CVE-2025-55080

References

Advisory 1

https://github.com/eclipse-threadx/threadx/security/advisories/GHSA-76hh-wrj5-hr2v

TI-2024-02054 Heap-based buffer overflow in Eclipse Foundation ThreadX CVSS 3.1HIGH 7.8
TI-2026-00443 Out-of-bounds write in Eclipse ThreadX CVSS 3.1HIGH 7.8
TI-2024-02056 Missing array size check in _Mtxinit() in the Xtensa port CVSS 3.1HIGH 7.8
TI-2025-34769 Missing check for thread priority CVSS 4.0MEDIUM 5.7
TI-2025-34768 Incomplete validation of kernel object pointers in system calls CVSS 4.0MEDIUM 5.7

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences