HOMEVULNERABILITIESCVE-2021-23882
MEDIUM

CVE-2021-23882

CWE-269Published: February 10, 2021· Updated: Jun 17, 2026

4.4
CVSS v3.1

Official Description

Improper Access Control vulnerability in McAfee Endpoint Security (ENS) for Windows prior to 10.7.0 February 2021 Update allows local administrators to prevent the installation of some ENS files by placing carefully crafted files where ENS will be installed. This is only applicable to clean installations of ENS as the Access Control rules will prevent modification prior to up an upgrade.

NVD Source

Technical Analysis

CVE-2021-23882 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 4.4.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

Affected Vendors & Products

mcafee1 product(s)
endpoint security
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://kc.mcafee.com/corporate/index?page=content&id=SB10345
ADVISORYhttps://kc.mcafee.com/corporate/index?page=content&id=SB10345

All References (2)

→
https://kc.mcafee.com/corporate/index?page=content&id=SB10345Broken Link · Vendor Advisory
→
https://kc.mcafee.com/corporate/index?page=content&id=SB10345Broken Link · Vendor Advisory

Quick Facts

CVE IDCVE-2021-23882
CVSS Score4.4 / 10
SeverityMEDIUM
WeaknessCWE-269
CISA KEVNo
Affected1 vendor(s)
PublishedFeb 10, 2021

Related CVEs (CWE-269)

CVE-2024-6240
10.0
CVE-2021-1388
10.0
CVE-2018-4310
10.0
CVE-2025-0505
10.0
CVE-2026-31852
10.0
CVE-2022-24783
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-23882 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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