Quick answers
- Is CVE-2026-69359 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-69359 being exploited in the wild.
- How severe is CVE-2026-69359?
- High severity, with a CVSS score of 7.8, published 8 September 2026.
- Which products and versions are affected?
- Microsoft Active Directory Domain Services <UNKNOWN>.
- Is there a fix for CVE-2026-69359?
- 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-2026-69359 attacked?
- It is attacked with local access.
- Am I affected by CVE-2026-69359?
- 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
A heap-based buffer overflow exists in Active Directory Domain Services that can be triggered by an authenticated local attacker. The vulnerability allows an attacker with valid credentials on a domain controller to overflow a heap buffer, leading to memory corruption and privilege escalation to SYSTEM or higher privileges. This is a local attack vector requiring prior authentication or local system access. The attacker must already have credentials or local access to execute the vulnerability; network-based exploitation from unauthenticated remote users is not possible. Microsoft has issued security updates to address this vulnerability.
Affected products
- Microsoft Active Directory Domain Services <UNKNOWN>
Timeline
- 2026-09-08: disclosed