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CVE-2026-70128 Microsoft CVE debrief

An information disclosure vulnerability exists in the HID Parser Library, which allows an authorized attacker to disclose information locally due to an out-of-bounds read. This vulnerability affects various versions of Windows 10, including Version 1809, Windows 10 Version 21H2, Windows 10 Version 22H2, Windows 11 version 23H2, Windows 11 Version 23H2, Windows 11 Version 24H2, Windows 11 Version 25H2, Windows 11 version 26H1, Windows 11 Version 26H2, Windows Server 2019, Windows Server 2019 (Server Core installation), Windows Server 2022, Windows Server 2025, and Windows Server 2025 (Server Core installation). Defenders responsible for systems that handle HID devices should assess

Vendor
Microsoft
Product
Windows 10 Version 1809
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-13
Original CVE updated
2026-10-13
Advisory published
2026-10-13
Advisory updated
2026-10-13

Who should care

Defenders responsible for systems that handle HID devices, especially those using affected versions of Windows 10, Windows 11, and Windows Server, should assess exposure and prioritize patching.

Why it matters

This vulnerability allows an authorized attacker to disclose information locally, affecting various Windows versions. Defenders should prioritize patching and verify HID device handling to prevent local information disclosure.

  • Local information disclosure possible
  • Patching required for affected systems
  • Verification of HID device handling necessary

Technical summary

The HID Parser Library vulnerability allows an authorized attacker to disclose information locally due to an out-of-bounds read. Affected products include Windows 10 Version 1809, Windows 10 Version 21H2, Windows 10 Version 22H2, Windows 11 version 23H2, Windows 11 Version 23H2, Windows 11 Version 24H2, Windows 11 Version 25H2, Windows 11 version 26H1, Windows 11 Version 26H2, Windows Server 2019, Windows Server 2019 (Server Core installation), Windows Server 2022, Windows Server 2025, and Windows Server 2025 (Server Core installation).

Defensive priority

Defenders should prioritize patching this vulnerability, especially for systems that handle HID devices, as it could lead to local information disclosure.

Recommended defensive actions

  • Patch affected systems
  • Verify HID device handling
  • Monitor for local information disclosure

Evidence notes

The CVE record and source item provide details about the vulnerability, but do not specify which versions are patched or provide additional details on exploitation. The NVD entry is currently has not been modified since then.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-70128 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-70128

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

  • CVE-2026-70128 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-70128

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

Supplemental references

  • HID Parser Library Information Disclosure Vulnerability

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/70xxx/CVE-2026-70128.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70128

    Supplemental source - vendor-advisory, patch

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.