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CVE Record

CVE-2022-21166: Incomplete cleanup in specific special register write operations for some Intel(R) Processors may allow an...

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.

MediumCVSS 5.5Not KEV-listedUpdated
Glexia's TakeAutomated analysis

Security readout for executives and security teams

CVE-2022-21166 is an Intel processor information-disclosure issue. A logged-in local user may be able to read sensitive data left behind by certain low-level processor operations. It is not described as remote code execution, and the supplied sources do not show active exploitation. Exposure is most relevant on systems using affected Intel processors, especially multi-user servers, virtualization hosts, and environments where untrusted local users or guests can run code. The bundle does not enumerate specific processor models; Intel SA-00615 is the authoritative affected-product reference. Treat this as a moderate-priority infrastructure patching issue. It is not presented as remotely exploitable, but confidentiality impact can matter on shared systems. Prioritize platforms that host sensitive workloads or multiple tenants. Mitigation focus: Review Intel SA-00615 for affected processors and vendor guidance.; Apply relevant BIOS, firmware, microcode, kernel, and hypervisor updates from trusted vendors.; Prioritize shared compute, virtualization, and multi-tenant systems first..

Prepared

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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cwe · low confidence lookup

CWE-459: Exact CWE lookup

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cve · low confidence lookup

CVE-2022-21166 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
12Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.5CVSS 3.1MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N1.83.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

5.5Medium
CVSS 3.1 vector shape for CVE-2022-21166Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/aIntel(R) ProcessorsSee referencesListed
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-459 · source CWE mapping

Incomplete Cleanup

Incomplete Cleanup represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.