CVE-2026-83647
7.5HighPublished 13 Oct 2026 · NVD status: Awaiting Analysis · AI triage by gemini-3.8-flash
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Impact
- High impact on availability
- Weakness
- CWE-125
Impact
Unauthenticated attackers can crash Active Directory Domain Services remotely over the network, causing a total denial of service. They do not need credentials or user interaction, just network reachability to the domain controller.
Root cause
An out-of-bounds read flaw exists in Active Directory Domain Services when processing network requests.
Affected systems
Versions not listed — check the vendor advisory.
CVSS v3.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Fix & remediation
Install the Microsoft security update for your Windows Server version from the MSRC advisory; if immediate patching is not possible, restrict network access to Domain Controller ports to trusted internal subnets only.
AI-suggested. Run it in staging first and check it against the vendor advisory. Why?
NVD description
Out-of-bounds read in Active Directory Domain Services allows an unauthorized attacker to deny service over a network.