CVE-2021-42298
7.8 · HIGHOverview
CVE-2021-42298 is a high-severity vulnerability affecting microsoft malware_protection_engine. It was published on November 10, 2021 and has a CVSS 3.1 base score of 7.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical Description
Microsoft Defender Remote Code Execution Vulnerability
Remediation
Check the references section for vendor advisories and patches from microsoft. Update malware_protection_engine to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| microsoft | malware_protection_engine | >= 0, < 1.1.18700.3 | Affected |
Frequently Asked Questions
What is CVE-2021-42298?
CVE-2021-42298 is a high-severity vulnerability affecting microsoft malware_protection_engine. It was published on November 10, 2021 and has a CVSS 3.1 base score of 7.8 (HIGH).
How severe is CVE-2021-42298?
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-42298?
Check the references section for vendor advisories and patches from microsoft. Update malware_protection_engine to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-42298?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-42298 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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