Description
In Eclipse ThreadX versions 6.0.1 through 6.5.2.202603, the PendSV handler of the Cortex-M module ports saves a preempted user-mode module thread's registers in privileged mode at addresses taken from the thread's stack pointer, without checking that pointer against the thread's stack. A user-mode, memory-protected module can thereby write up to nine words, eight of its choosing, or 25 with floating-point state, into memory immediately below any region it may write, and read back what is stored there.
Published: 2026-11-02
Score: 7 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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History

Mon, 02 Nov 2026 17:30:00 +0000

Type Values Removed Values Added
First Time appeared Eclipse
Eclipse threadx
Vendors & Products Eclipse
Eclipse threadx
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 02 Nov 2026 15:30:00 +0000

Type Values Removed Values Added
Description In Eclipse ThreadX versions 6.0.1 through 6.5.2.202603, the PendSV handler of the Cortex-M module ports saves a preempted user-mode module thread's registers in privileged mode at addresses taken from the thread's stack pointer, without checking that pointer against the thread's stack. A user-mode, memory-protected module can thereby write up to nine words, eight of its choosing, or 25 with floating-point state, into memory immediately below any region it may write, and read back what is stored there.
Title Cortex-M module ports save a preempted user-mode module thread's registers through its unchecked stack pointer in privileged mode
Weaknesses CWE-787
CWE-822
References
Metrics cvssV4_0

{'score': 7, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: eclipse

Published:

Updated: 2026-11-02T16:17:31.540Z

Reserved: 2026-10-23T07:04:01.041Z

Link: CVE-2026-115653

cve-icon Vulnrichment

Updated: 2026-11-02T16:17:25.769Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-02T16:17:28.683

Modified: 2026-11-02T19:14:53.030

Link: CVE-2026-115653

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-02T17:30:17Z

Weaknesses