Quick answers
- Is CVE-2026-45648 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-45648 being exploited in the wild.
- How severe is CVE-2026-45648?
- High severity, with a CVSS score of 8.8, published 9 June 2026.
- Which products and versions are affected?
- Microsoft Active Directory Domain Services.
- Is there a fix for CVE-2026-45648?
- 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-2026-45648 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2026-45648?
- 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 stack-based buffer overflow (CWE-121) exists in Microsoft Active Directory Domain Services. The vulnerability is triggered when the service improperly handles specially crafted network requests, leading to memory corruption. An attacker with low-privileged domain credentials can exploit this over the network without any user interaction. Successful exploitation allows for remote code execution with high privileges on the affected domain controller. Microsoft has released security updates to address this issue; administrators should apply the latest cumulative updates for Windows Server.
Affected products
- Microsoft Active Directory Domain Services
Timeline
- 2026-06-09: disclosed
- 2026-06-09: advisory