High severity8.2NVD Advisory· Published Sep 22, 2021· Updated Jun 17, 2026
CVE-2021-31847
CVE-2021-31847
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.
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Affected products
3- Range: <5.7.4
- Range: unspecified
Patches
Vulnerability mechanics
References
2- www.zerodayinitiative.com/advisories/ZDI-21-1104/nvdThird Party AdvisoryVDB Entry
- kc.mcafee.com/corporate/indexnvdBroken Link
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