Microsoft Defender: Denial of Service Vulnerability
What to do: Run Windows Update and restart the PC.
- Affects
- Microsoft Defender
- Identifier
- CVE-2026-45498
- What it is
- Microsoft Defender contains an unspecified vulnerability that allows for denial of service.
- Official guidance
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.