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PatchSiren cyber security CVE debrief

CVE-2021-23874 McAfee CVE debrief

CVE-2021-23874 is a McAfee Total Protection (MTP) improper privilege management vulnerability that CISA listed in its Known Exploited Vulnerabilities catalog on 2021-11-03. Because it is on the KEV catalog, defenders should treat it as a high-priority remediation item and apply vendor updates per guidance. The supplied corpus does not include a CVSS score or deeper technical detail.

Vendor
McAfee
Product
McAfee Total Protection (MTP)
CVSS
HIGH 8.2
CISA KEV
Listed
Original CVE published
2021-11-03
Original CVE updated
2021-11-03
Advisory published
2021-11-03
Advisory updated
2021-11-03

Who should care

Security and IT teams responsible for endpoints running McAfee Total Protection (MTP), especially organizations that follow CISA KEV remediation deadlines or manage large Windows desktop fleets.

Technical summary

The available source data identifies the issue as an improper privilege management vulnerability in McAfee Total Protection (MTP). CISA’s KEV entry marks it as a known exploited vulnerability and directs organizations to apply updates per vendor instructions. No additional technical breakdown, exploitability details, or impact scope is provided in the supplied corpus.

Defensive priority

High. KEV inclusion indicates this CVE should be prioritized for immediate assessment and remediation within the stated due date window.

Recommended defensive actions

  • Identify all endpoints with McAfee Total Protection (MTP) installed.
  • Apply the vendor-recommended update or mitigation as soon as possible.
  • Verify remediation against the CISA KEV deadline associated with this entry (due date: 2021-11-17).
  • Check asset inventory and endpoint management tools for residual installations or outdated versions.
  • Monitor for any follow-up vendor advisories or updated guidance tied to CVE-2021-23874.

Evidence notes

Evidence is limited to the supplied CVE metadata, the CISA KEV source item, and the listed official resource links. Supported facts: CVE-2021-23874 is associated with McAfee Total Protection (MTP), is described as an improper privilege management vulnerability, was added to CISA KEV on 2021-11-03, and has a due date of 2021-11-17. The source item notes the required action: apply updates per vendor instructions.

Sources and references

Verified primary and authoritative sources

  • CVE-2021-23874 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2021-23874

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2021-23874 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2021-23874

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.