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PatchSiren cyber security CVE debrief

CVE-2026-96859 Microsoft CVE debrief

A Windows Imaging Component Information Disclosure Vulnerability exists, allowing an authorized attacker to disclose information locally through an out-of-bounds read. Multiple Windows versions and server releases are affected. This vulnerability can be exploited by an authorized attacker with local access, potentially leading to information disclosure. The affected products include various Windows versions and server releases. Defenders should assess exposure and apply patches accordingly.

Vendor
Microsoft
Product
Windows 10 Version 1607
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 Windows systems, especially those with local access, should assess exposure and apply patches. This includes administrators and security teams managing Windows environments, as they need to prioritize patching affected systems to prevent potential information disclosure.

Why it matters

CVE-2026-96859 is a Windows Imaging Component Information Disclosure Vulnerability. An authorized attacker can exploit this vulnerability locally. Multiple Windows versions and server releases are affected. Defenders should prioritize patching affected systems.

  • Local information disclosure possible.
  • Patching required for affected systems.
  • Verify system exposure and apply patches.

Technical summary

The Windows Imaging Component has an out-of-bounds read vulnerability, allowing authorized attackers to disclose information locally. Multiple Windows versions are affected, including Windows 10, Windows 11, and various Windows Server releases. The vulnerability can be exploited by an authorized attacker with local access, potentially leading to information disclosure.

Defensive priority

Defenders should prioritize patching affected Windows systems, especially those exposed to local attacks.

Recommended defensive actions

  • Patch affected Windows 10, Windows 11, and Windows Server versions.
  • Verify system exposure and apply patches.
  • Monitor for local attacks on Windows systems.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability. Microsoft has released a patch for the issue. The vulnerability is caused by an out-of-bounds read in the Windows Imaging Component. The CVE record was published on 2026-10-13T19:00:34.476Z and has not been modified since then. The NVD entry provides additional information on the vulnerability, including its CVSS score and severity.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-96859 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-96859

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

  • CVE-2026-96859 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-96859

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

Supplemental 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.