Quick answers
- Is CVE-2026-69809 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-69809 being exploited in the wild.
- How severe is CVE-2026-69809?
- High severity, with a CVSS score of 7.5, published 8 September 2026.
- Which products and versions are affected?
- Microsoft Active Directory Domain Services <UNKNOWN>.
- Is there a fix for CVE-2026-69809?
- 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-2026-69809 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-69809?
- Check whether you run Microsoft Active Directory Domain Services at an affected version. 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
This vulnerability is a memory leak (missing release of memory after effective lifetime) in Microsoft Active Directory Domain Services. The flaw is remotely exploitable over a network and requires no authentication or user interaction. An attacker can send crafted network requests that trigger the memory leak, causing the affected server to consume increasing amounts of memory until resources are exhausted, resulting in denial of service. The CVSS score of 7.5 reflects the high availability impact despite the network-based attack vector.
Affected products
- Microsoft Active Directory Domain Services <UNKNOWN>
Timeline
- 2026-09-08: disclosed