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PatchSiren cyber security CVE debrief

CVE-2026-8810 Insyde Software CVE debrief

The CVE-2026-8810 vulnerability affects ARM-based systems with HDD Password enabled, potentially allowing localized attacks with physical access and low privileges. This vulnerability has a CVSS score of 6.9 (Medium) and requires review of UEFI variable handling and HDD Password implementation. Organizations should verify vendor remediation and patch application, and monitor for potential localized attacks. The vulnerability's impact is limited to systems with specific configurations, and further verification is needed to understand the full scope of affected systems and potential mitigations.

Vendor
Insyde Software
Product
InsydeH2O, InsydeH2O ARM
CVSS
MEDIUM 6.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-19
Original CVE updated
2026-08-31
Advisory published
2026-08-19
Advisory updated
2026-08-31

Who should care

Organizations using ARM-based systems with HDD Password enabled should review and verify their configurations. This includes operators of affected platforms, vulnerability management teams, and security personnel responsible for ensuring the security of UEFI variables and HDD Password implementations on ARM architectures. They should also verify vendor remediation and patch application, and monitor for potential localized attacks.

Technical summary

A vulnerability in HDD Password on ARM platforms could allow an attacker to retrieve HDD Password from UEFI variables, with a CVSS score of 6.9 (Medium). This vulnerability affects systems using ARM-based architectures with HDD Password enabled, potentially allowing localized attacks with physical access and low privileges. The vulnerability requires review of UEFI variable handling and HDD Password implementation, and verification of vendor remediation and patch application.

Defensive priority

Medium-priority defensive review recommended due to potential for localized attacks requiring physical access and low privileges.

Recommended defensive actions

  • Review UEFI variable handling and HDD Password implementation on ARM platforms
  • Verify vendor remediation and patch application
  • Monitor for potential localized attacks
  • Perform compensating controls review for exposed systems
  • Conduct asset inventory review for affected systems

Evidence notes

Evidence is limited; primary official records indicate a vulnerability in HDD Password on ARM platforms, allowing potential retrieval from UEFI variables. Further verification needed. Additional review of official advisories and CVE records is recommended to understand the full scope of affected systems and potential mitigations.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-8810 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-8810

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-8810 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-8810

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://www.insyde.com/security-pledge/sa-2026005/

    8338d8cb-57f7-4252-abc0-96fd13e98d21

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.