CVE-2021-31847
8.2 · HIGHOverview
CVE-2021-31847 is a high-severity vulnerability affecting mcafee agent. It was published on September 22, 2021 and has a CVSS 3.1 base score of 8.2 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
Improper access control vulnerability in the repair process for McAfee Agent for Windows prior to 5.7.4 could allow a local attacker to perform a DLL preloading attack using unsigned DLLs. This would result in elevation of privileges and the ability to execute arbitrary code as the system user, through not correctly protecting a temporary directory used in the repair process and not checking the DLL signature.
Remediation
Check the references section for vendor advisories and patches from mcafee. Update agent 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 |
|---|---|---|---|
| mcafee | agent | >= 0, < 5.7.4 | Affected |
Frequently Asked Questions
What is CVE-2021-31847?
CVE-2021-31847 is a high-severity vulnerability affecting mcafee agent. It was published on September 22, 2021 and has a CVSS 3.1 base score of 8.2 (HIGH).
How severe is CVE-2021-31847?
This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-31847?
Check the references section for vendor advisories and patches from mcafee. Update agent 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-2021-31847?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-31847 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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