CVE-2021-23874
LPE in Mcafee Total Protection ≤ 16.0.30
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:HSummary
CVE-2021-23874 is a high-severity Improper Privilege Management (CWE-269) vulnerability in Mcafee Total Protection. Its CVSS base score is 8.2 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Abuse Elevation Control Mechanism (T1548); ranked in the top 40% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2021-23874 is an arbitrary process execution vulnerability affecting McAfee Total Protection (MTP) versions prior to 16.0.30. It is associated with CWE-269 and CWE-732 and carries a CVSS 3.1 score of 8.2 reflecting local attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability under a changed scope.
A local user can exploit the flaw to bypass MTP self-defense mechanisms, obtain elevated privileges, and execute arbitrary code on the affected system.
McAfee has published remediation guidance in FAQ document TS103114, while the presence of the CVE in the CISA Known Exploited Vulnerabilities catalog indicates confirmed real-world exploitation activity.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-10800
Vulnerability Data
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.
- CWE(s)
- KEV Date Added
- 03 November 2021
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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- 12 hardening rules · 6 OS baselines
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Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Policy addresses roles, responsibilities, and privilege management to prevent improper privilege assignments.
Implements core proper privilege management by restricting to only required rights.
Policy requires training on privilege management and least privilege, making it harder to exploit improper privilege management weaknesses.
Training covers proper privilege management practices, making incorrect privilege assignments less likely.
The control mandates review of privilege assignments to ensure they are appropriate and minimal.
Baseline configuration documents and controls privilege assignments, making improper privilege management harder to introduce or sustain.
Manages privileges for change control activities and provides oversight to prevent improper privilege use in configuration updates.
Reviewing changes for security impacts prevents introduction of improper privilege assignments or escalations.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Directly requires defining, enforcing, and reviewing access permissions and least privilege on resources.
Hardened baselines and configuration management explicitly include correct permission settings for critical resources.
PR.AA-01 supplies credential/identity lifecycle support that can reduce some privilege-assignment errors but does not itself assign, modify, or check privileges, leaving most of CWE-269's risk unaddressed.
PR.PS-05 can partially limit exploitability of some privilege issues via execution restrictions, but does not address the core design/implementation flaws of CWE-269 at all.
PR.DS-10 protects data-in-use without touching privilege assignment/tracking, so it neither prevents CWE-269 nor removes more than one narrow facet of its risk.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
By requiring owners to determine and document the exact permissions needed for each asset, the control reduces the likelihood that default or overly permissive file and resource permissions will be left in place.
Requiring owner approval, segregation of duties, and periodic reviews prevents the assignment of excessive or unnecessary privileges to users or processes.
Enforcing minimum-necessary privileges, temporary grants, and separation of administrative versus normal identities prevents the over-assignment of rights that CWE-269 describes.
Dynamic techniques that grant the minimum necessary rights for a given time window and revoke them afterward reduce the window in which excessive or unnecessary privileges can be exploited.
Enforcing differentiated permissions on the source-code repository and program listings stops the assignment of overly broad default or inherited permissions to critical resources.
By defining and enforcing secure permission settings in configuration templates, the control reduces the likelihood that critical resources receive incorrect permission assignments.
Hardening callouts derived
Configuration rules from DISA STIG baselines that bear on weaknesses of the type cited by this CVE. Each rule is shown with the relationship its mapping actually records, against the CWE it was authored against. Derived via CVE→CWE over `controls_xwalks` (authoritative rows only; rows rated `none` are excluded).
Oracle Linux 8 (1 rule)
- V-248577 OL 8 must enable kernel parameters to enforce Discretionary Access Control (DAC) on symlinks. prevents CWE-732
Windows 10 (1 rule)
- V-220712 Only accounts responsible for the administration of a system must have Administrator rights on the system. prevents CWE-269
Windows 11 (1 rule)
- V-253269 Only accounts responsible for the administration of a system must have Administrator rights on the system. prevents CWE-269
Windows Server 2016 (3 rules)
- V-224972 Active Directory Group Policy objects must have proper access control permissions. prevents CWE-732
- V-225007 Only administrators responsible for the member server or standalone or nondomain-joined system must have Administrator rights on the system. prevents CWE-269
- V-224831 Local volumes must use a format that supports NTFS attributes. prevents CWE-732
Windows Server 2019 (3 rules)
- V-205741 Windows Server 2019 Active Directory Group Policy objects must have proper access control permissions. prevents CWE-732
- V-205746 Windows Server 2019 must only allow Administrators responsible for the member server or standalone or nondomain-joined system to have Administrator rights on the system. prevents CWE-269
- V-205663 Windows Server 2019 local volumes must use a format that supports NTFS attributes. prevents CWE-732
Windows Server 2022 (3 rules)
- V-254393 Windows Server 2022 Active Directory Group Policy objects must have proper access control permissions. prevents CWE-732
- V-254428 Windows Server 2022 must only allow administrators responsible for the member server or standalone or nondomain-joined system to have Administrator rights on the system. prevents CWE-269
- V-254250 Windows Server 2022 local volumes must use a format that supports NTFS attributes. prevents CWE-732