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CVE-2026-26162 Microsoft CVE debrief

A Windows OLE Elevation of Privilege Vulnerability exists, allowing an authorized attacker to elevate privileges locally due to a type confusion issue. Multiple Windows versions and server releases are affected, including Windows 10, Windows 11, and Windows Server editions. This vulnerability, tracked as CVE-2026-26162, is caused by improper handling of object types in Windows OLE, which can lead to local privilege escalation. The vulnerability affects various Windows versions and server releases, posing a significant risk to systems exposed to local attacks. Defenders should prioritize patching affected systems, assess exposure based on system configurations, and remediate high-  

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-14
Original CVE updated
2026-10-15
Advisory published
2026-04-14
Advisory updated
2026-10-15

Who should care

Defenders responsible for Windows systems, especially those exposed to local attacks, should prioritize patching this vulnerability. System administrators and security teams should assess system configurations to determine exposure and prioritize remediation for high-risk systems.

Why it matters

CVE-2026-26162 is a high-severity vulnerability in Windows OLE that allows local privilege escalation. Defenders should prioritize patching affected systems, assess exposure, and remediate high-risk configurations.

  • Local privilege escalation is possible, allowing attackers to gain elevated access.
  • Affected systems require immediate patching to prevent exploitation.
  • Defenders must assess system configurations to determine exposure.
  • Remediation priority is high for systems at risk of local attacks.

Technical summary

The Windows OLE Elevation of Privilege Vulnerability (CVE-2026-26162) is caused by a type confusion issue in Windows OLE, allowing an authorized attacker to elevate privileges locally. The vulnerability affects multiple Windows versions, including Windows 10, Windows 11, and various Windows Server editions.

Defensive priority

Defenders should prioritize patching this vulnerability, especially for systems exposed to local attacks. Assess exposure based on system configurations and prioritize remediation for high-risk systems.

Recommended defensive actions

  • Patch affected Windows versions and server releases immediately, especially those exposed to local attacks.
  • Assess system configurations to determine exposure.
  • Prioritize remediation for high-risk systems.
  • Verify patches have been applied successfully.

Evidence notes

The CVE Program and NVD provide official records of the vulnerability. Microsoft's advisory confirms the vulnerability and provides patches. Affected versions and configurations are detailed in the CVE and NVD records.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-26162 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-26162

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

  • CVE-2026-26162 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-26162

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

Supplemental references

  • Windows OLE Elevation of Privilege Vulnerability

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/26xxx/CVE-2026-26162.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26162

    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.