EUVD-2026-73372
GHSA-6r5m-2rxv-rh2c
Severity by source
AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-accessible AD DS reachable by any domain user (PR:L, AV:N); AC:H reflects heap-grooming or race-condition requirement typical of controlled UAF exploitation.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Use after free in Active Directory Domain Services allows an authorized attacker to execute code over a network.
AnalysisAI
Remote code execution in Windows Active Directory Domain Services (AD DS) exposes domain controllers across Windows Server 2012 through 2025 to exploitation by low-privileged authenticated domain users via a use-after-free memory corruption flaw. The vulnerability (CWE-416) is reachable over the network but requires high attack complexity, likely a race condition or heap-grooming technique, to achieve fully controlled memory corruption resulting in arbitrary code execution with C:H/I:H/A:H impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid, low-privileged Active Directory domain user account (PR:L) with network connectivity to a domain controller running the AD DS role - conditions routinely met by any authenticated insider or post-phishing attacker. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.5 score (AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H) accurately captures the tension between catastrophic impact and constrained exploitability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the Microsoft-issued security update via Windows Update or WSUS as documented in the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62813. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory all domain controllers and confirm Windows Server versions (2012 through 2025) and current patch levels; assess network access controls limiting domain user remote access to domain controllers. …
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Same weakness CWE-416 – Use After Free
View allSame technique Use After Free
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External POC / Exploit Code
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