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CVE-2026-62762 Microsoft CVE debrief

A null pointer dereference vulnerability in Active Directory Domain Services allows an authorized attacker to deny service over a network. This CVE was published on 2026-09-08T18:17:59.347Z and was last modified on 2026-09-29T16:28:29.613Z. The vulnerability affects Active Directory Domain Services, and defenders should assess exposure and prioritize patching or mitigation. The CVSS score is 6.5, with a severity of MEDIUM. The vulnerability is a null pointer dereference, which allows an authorized attacker to deny service over a network.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-08
Original CVE updated
2026-09-29
Advisory published
2026-09-08
Advisory updated
2026-09-29

Who should care

Defenders responsible for Active Directory Domain Services should assess exposure and prioritize patching or mitigation. They should verify exposure in their Active Directory Domain Services and apply patches or mitigations as available. Defenders should also monitor for potential service denial and review compensating controls for exposed systems while remediation is scheduled and verified.

Why it matters

CVE-2026-62762 is a null pointer dereference vulnerability in Active Directory Domain Services that allows an authorized attacker to deny service over a network. Defenders should verify exposure and prioritize patching or mitigation.

  • Service denial over a network requires verification from official sources
  • Verify exposure in Active Directory Domain Services
  • Apply patches or mitigations as available

Technical summary

The vulnerability is a null pointer dereference in Active Directory Domain Services, which allows an authorized attacker to deny service over a network. The CVSS score is 6.5, with a severity of MEDIUM. The vulnerability affects Active Directory Domain Services, and defenders should assess exposure and prioritize patching or mitigation. The vulnerability can be exploited by an authorized attacker, and defenders should verify exposure and apply patches or mitigations as available.

Defensive priority

Defenders should prioritize verifying exposure in their Active Directory Domain Services and applying patches or mitigations as available.

Recommended defensive actions

  • Verify exposure in Active Directory Domain Services
  • Apply patches or mitigations as available
  • Monitor for potential service denial

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its CVSS score and vector. However, specific details on exploitation or impact are limited.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-62762 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-62762

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

  • CVE-2026-62762 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-62762

    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.