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Vulnerabilities

Vulnerability · CVE-2026-88165

Out-of-bounds write in Active Directory Domain Services allows an authorized attacker to execute code over a network.

Published Oct 13, 2026 · catalog updated Oct 20, 2026 · windows 10 1607

Open the advisory

Exploitation likelihood is not on this record for CVE-2026-88165. A missing EPSS score is not a low risk. Compare windows 10 1607 with the linked advisory before you change production.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
  • EPSS is missing. A missing score is not a low risk.
Severity
High8.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
Awaiting synchronization with FIRST
Remediation
Advisory link
Affected products
cpe microsoft/windows 10 1607 · cpe microsoft/windows 10 1809 · cpe microsoft/windows 10 21h2 · cpe microsoft/windows 10 22h2

Out-of-bounds write in Active Directory Domain Services allows an authorized attacker to execute code over a network.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe microsoft/windows 10 1607version unspecified
  • cpe microsoft/windows 10 1809version unspecified
  • cpe microsoft/windows 10 21h2version unspecified
  • cpe microsoft/windows 10 22h2version unspecified

How to fix CVE-2026-88165

  • Recommended remediation

    A patch or advisory reference is linked. Open the original publisher for availability by product version.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

Exploitation likelihood is not on this record for CVE-2026-88165. A missing EPSS score is not a low risk. Compare windows 10 1607 with the linked advisory before you change production.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-787: Out-of-bounds Write. EPSS is not on this record yet. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Windows security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 13, 2026 · NIST NVD

    Detected

    Out-of-bounds write in Active Directory Domain Services allows an authorized attacker to execute code over a network.

  2. Oct 20, 2026 · NIST NVD

    Updated

    Out-of-bounds write in Active Directory Domain Services allows an authorized attacker to execute code over a network.

Sources

  • NIST NVDVulnerability recordCVE-2026-88165

    Out-of-bounds write in Active Directory Domain Services allows an authorized attacker to execute code over a network.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 20, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.