Quick answers
- Is CVE-2026-83667 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-83667 being exploited in the wild.
- How severe is CVE-2026-83667?
- 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-2026-83667?
- 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-2026-83667 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2026-83667?
- 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
An out-of-bounds read in Active Directory Domain Services allows an authenticated network attacker to trigger a denial-of-service condition. The vulnerability requires valid network access and authentication to the directory service. Exploitation results in service disruption but does not lead to code execution or data exfiltration.
Affected products
- Microsoft Active Directory Domain Services
Timeline
- 2026-10-13: disclosed