CVE-2026-95109

Cortex-A7 module data validation checks only the first address of a caller-supplied range

HIGH
8.5
CVSS Score
Published: October 20, 2026 at 03:17 PM UTC
Updated: October 20, 2026 at 07:48 PM UTC
1 product affected across 1 vendorThreadX

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Severity
HIGH8.5
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

The Cortex-A7 MMU Modules port validates a caller-supplied buffer by translating **one address** — the first byte. The common Module Manager hands its range check the module instance, the start address and the complete byte size; the Cortex-A7 implementation discarded the instance and the size and asked the MMU a single question about the start. A memory-protected module therefore passed any range whose first byte was user-readable, however far the rest of it reached. Privileged dispatch code then read or wrote the whole range. Because every protected-module dispatcher that consumes a buffer or an extra-parameter array goes through this one macro, the defect is not in any individual service: it is in the primitive all of them rely on.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.1
Vendor states this is fixed in 6.5.2.202603 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.5HIGHeclipse
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-125CWE-787

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