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CVE Record

CVE-2022-21127: Incomplete cleanup in specific special register read operations for some Intel(R) Processors may allow an a...

Incomplete cleanup in specific special register read 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-2022-21127 is an Intel processor information-disclosure issue. A local authenticated user may be able to read sensitive data left behind after specific special-register reads. The business risk is highest on shared servers, virtualization hosts, and systems where untrusted users or workloads can run locally. Exposure depends on processor model and vendor firmware, operating system, or hypervisor handling. Prioritize Intel-based multi-tenant hosts, virtualization platforms, build systems, and servers allowing local shell or workload execution. Treat as a moderate-priority confidentiality issue. It is not described as remotely exploitable, but it can matter materially on shared compute infrastructure where local users or workloads may access sensitive residual data. Mitigation focus: Review Intel SA-00615 for affected processor details and vendor-recommended updates.; Apply applicable BIOS, firmware, microcode, OS, and hypervisor updates from trusted vendors.; Check Debian and other OS advisories for package-level remediation guidance..

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-2022-21127 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
4Source 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-2022-21127Attack 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.