Quick answers
- Is CVE-2026-83648 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-83648 being exploited in the wild.
- How severe is CVE-2026-83648?
- Medium severity, with a CVSS score of 6.5, published 13 October 2026.
- Which products and versions are affected?
- Microsoft Active Directory Domain Services.
- Is there a fix for CVE-2026-83648?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-83648 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2026-83648?
- Check whether you run Microsoft Active Directory Domain Services. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A null pointer dereference vulnerability in Active Directory Domain Services allows a remote authenticated attacker to trigger a denial of service condition. The attack requires network access and valid authentication credentials. Successful exploitation causes the AD DS service to crash, temporarily preventing authentication and directory operations until the service is restarted.
Affected products
- Microsoft Active Directory Domain Services
Timeline
- 2026-10-13: disclosed