CVE-2026-95109 Eclipse Foundation CVE debrief

Who should care

Defenders responsible for Eclipse ThreadX deployments should assess exposure and prioritize verification and mitigation efforts. System administrators should monitor system logs for potential unauthorized operations. Security teams should review the CVE record and source item for additional information about the vulnerability. Operators of affected platforms and vulnerability management teams should review the CVE record and source item for additional  

Why it matters

CVE-2026-95109 is a vulnerability in the Eclipse ThreadX product that allows a memory-protected module to pass any range whose first byte is user-readable, potentially leading to unauthorized read or write operations. Defenders should prioritize verifying the affected versions and applying patches or mitigations.

• Defenders need to verify the affected versions of Eclipse ThreadX and apply patches or mitigations to prevent potential unauthorized access.
• System administrators should monitor system logs for potential unauthorized operations.
• Security teams should review the CVE record and source item for additional information about the vulnerability.

Technical summary

The Cortex-A7 MMU Modules port validates a caller-supplied buffer by translating only one address, the first byte. This allows a memory-protected module to pass any range whose first byte is user-readable, potentially leading to unauthorized read or write operations. The issue arises from the validation of caller-supplied buffers, where only the first address of the range is checked. Affected product deployments should assess exposure and prioritize verification and mitigation efforts. Defenders need to verify the affected versions of Eclipse ThreadX and apply patches or mitigations to prevent potential unauthorized access.

Defensive priority

Defenders should prioritize verifying the affected versions of Eclipse ThreadX and applying patches or mitigations as recommended by the vendor.

Recommended defensive actions

• Verify the version of Eclipse ThreadX in use and check if it is affected by CVE-2026-95109.
• Apply patches or mitigations recommended by the vendor, Eclipse Foundation.
• Monitor system logs for potential unauthorized access or operations.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record and source item provide details about the vulnerability, including its description, CVSS score, and affected versions. However, additional information about potential exploits or impacts is limited.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.