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No exploitation reportedFix available

CVE-2022-0166

No exploitation reported by the sources we read.

  • Published2022-01-19
  • Fixed in5.7.5
  • WeaknessCWE-427

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A privilege escalation vulnerability in the McAfee Agent prior to 5.7.5. McAfee Agent uses openssl.cnf during the build process to specify the OPENSSLDIR variable as a subdirectory within the installation directory. A low privilege user could have created subdirectories and executed arbitrary code with SYSTEM privileges by creating the appropriate pathway to the specifically created malicious openssl.cnf file.

Timeline

dates in UTC
  1. 2022-01-1911:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-0166?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-0166?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Mcafee agent
BranchAffectedFixed in
5.7< 5.7.55.7.5

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Mcafee agent to 5.7.5

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CNACVSS 3.17.8read 2026-10-23
  • NVDCVSS 3.17.8read 2026-10-23
  • NVDCVSS 2.07.2read 2026-10-23
  • NVDweakness (CWE)CWE-427read 2026-10-23
  • FIRST EPSSEPSS score2.9 %2026-10-23

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2022-01-19
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2022-0166?

A privilege escalation vulnerability in the McAfee Agent prior to 5.7.5. McAfee Agent uses openssl.cnf during the build process to specify the OPENSSLDIR variable as a subdirectory within the installation directory. A low privilege user could have created subdirectories and executed arbitrary code with SYSTEM privileges by creating the appropriate pathway to the specifically created malicious openssl.cnf file.

Is CVE-2022-0166 actively exploited?

Active exploitation of CVE-2022-0166 has not been confirmed. Its EPSS score was 2.9% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-0166?

CVE-2022-0166 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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