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Back to active CVEs
High · CVSS 8.2Known ExploitedCVE-2021-23874

McAfee Total Protection (MTP) privilege escalation vulnerabilityCVE-2021-23874

Answer in brief

CVE-2021-23874 records a High severity (CVSS 8.2) vulnerability in McAfee Total Protection (MTP) privilege escalation vulnerability. The current sources mark it as known exploited. The current feed maps McAfee,LLC/McAfee Total Protection (MTP) (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Feb 10, 2021Updated Oct 21, 2025Source checked Nov 5, 2026First seen by HOL May 24, 2026Material review Oct 21, 2025
Upstream Advisory

Key facts

Risk
High · CVSS 8.2
Exploitation
Known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 8.2. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps McAfee,LLC/McAfee Total Protection (MTP) (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
McAfee,LLC/McAfee Total Protection (MTP)generic>=unspecified <16.0.3016.0.30

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for McAfee,LLC/McAfee Total Protection (MTP).
  2. 2Review the reported fix. Update McAfee,LLC/McAfee Total Protection (MTP) to 16.0.30 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Feb 10, 2021

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 21, 2025

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    May 24, 2026

  4. Added to CISA KEV

    Nov 3, 2021

    Evidence: source:kev:kev:kev:record

Sources and claim methodology

  • Source referenceservice.mcafee.com
  • CISA Known Exploited Vulnerabilities catalogcisa.gov
Upstream source description

Arbitrary Process Execution vulnerability in McAfee Total Protection (MTP) prior to 16.0.30 allows a local user to gain elevated privileges and execute arbitrary code bypassing MTP self-defense.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Privilege Escalation
EPSS
1.0%
CWE IDs
CWE-269
Source
CVE List V5
Source checked
Nov 5, 2026
References
2 linked sources
Open source record