It doesn’t require much effort.
Microsoft has identified some serious exploits that could impact your Windows machine if you allow them. Bleeping Computer reported on these vulnerabilities, which specifically affect Windows Defender, the built-in anti-malware software in Windows. The company has detailed explanations on its security website for the vulnerabilities CVE-2026-41091 and CVE-2026-45498. While the technical details may be difficult for non-experts to grasp, the primary concern is that vulnerable Windows machines are at risk of denial-of-service attacks.
The good news is Microsoft has already disclosed these exploits, and a fix is in progress. If you have automatic updates for Defender enabled, it should have installed the Malware Protection Engine versions 1.1.26040.8 and 4.18.26040.7 to address these exploits.
Bleeping Computer also provided a helpful set of instructions to ensure these updates are active:
1. Open Windows Security.
2. Select “Virus and threat protection.”
3. Click “Protection Updates” and then “Check for updates.”
4. Select “Settings” and then “About.”
5. Check the Anti-malware Client version number to ensure it matches the numbers provided above.
Hopefully, everything is in order, and your machine is secure.
Topics: Cybersecurity, Microsoft.