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Vulnerabilities

Vulnerability · CVE-2022-21166

Incomplete cleanup in specific special register write operations for some Intel(R) Processors may allow an authenticated user to potentially enable information disclos…

Published Jun 15, 2022 · catalog updated Oct 14, 2026 · the affected product

Check if you run it

No confirmed exploitation is on record for CVE-2022-21166. EPSS is 6.45%. Act only if a listed version of the affected product is installed.

Gaps on this record

  • No plain product name is stored. The page cannot tell you which product to check.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
6.45%
Remediation
Advisory link
Affected products
cpe debian/debian linux · cpe fedoraproject/fedora · cpe intel/sgx dcap · cpe intel/sgx psw · cpe intel/sgx sdk · cpe vmware/esxi

Incomplete cleanup in specific special register write operations for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe debian/debian linux9.0
  • cpe fedoraproject/fedora35
  • cpe fedoraproject/fedora36
  • cpe intel/sgx dcapversion unspecified
  • cpe intel/sgx pswversion unspecified
  • cpe intel/sgx sdkversion unspecified
  • cpe vmware/esxi7.0
  • cpe xen/xenversion unspecified

How to fix CVE-2022-21166

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2022-21166. EPSS is 6.45%. Act only if a listed version of the affected product is installed.

Which versions are affected?

Compare what you have installed with debian/debian linux 9.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-459. EPSS 6.45%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 15, 2022 · NIST NVD

    Detected

    Incomplete cleanup in specific special register write operations for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

  2. Oct 14, 2026 · NIST NVD

    Updated

    Incomplete cleanup in specific special register write operations for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

Sources

  • CVE.orgVulnerability recordCVE-2022-21166

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2022-21166

    30-day exploitation probability 6.45%

    first.org
  • NIST NVDVulnerability recordCVE-2022-21166

    Incomplete cleanup in specific special register write operations for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 21, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.