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  4. CVE 2026 115653 cortex m module ports save a preempted user mode
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Back to active CVEs
High · CVSS 7.0CVE-2026-115653

Cortex-M module ports save a preempted user-mode module thread's registers through its unchecked stack pointer in privileged modeCVE-2026-115653

Answer in brief

CVE-2026-115653 records a High severity (CVSS 7.0) vulnerability in Cortex-M module ports save a preempted user-mode module thread's registers through its unchecked stack pointer in privileged mode. The current sources do not mark it as known exploited. The current feed maps Eclipse Foundation/Eclipse ThreadX (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 2, 2026Updated Nov 2, 2026Source checked Nov 2, 2026First seen by HOL Nov 2, 2026Material review Nov 2, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.0
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 7.0. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Eclipse Foundation/Eclipse ThreadX (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Eclipse Foundation/Eclipse ThreadXgeneric>=6.0.1 <=6.5.2.202603Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Eclipse Foundation/Eclipse ThreadX.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Nov 2, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 2, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 2, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencegitlab.eclipse.org
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • NULL pointer dereference in ICMPv6 Packet Too Big processing when the destination table is fullSame eclipse foundation/eclipse threadx package
  • User-mode module can suspend, terminate, re-prioritise and abort the waits of threads it does not ownSame eclipse foundation/eclipse threadx package
  • Module Manager loaders leave the manager mutex held when a module preamble's sizes overflow, blocking every later module operationSame eclipse foundation/eclipse threadx package

Record context

Vulnerability class
Memory Corruption
EPSS
Not reported
CWE IDs
CWE-787, CWE-822
Source
CVE List V5
Source checked
Nov 2, 2026
References
2 linked sources
Open source record