LiveActive security incident?Get immediate response
CVE Record

CVE-2021-0086: Observable response discrepancy in floating-point operations for some Intel(R) Processors may allow an auth...

Observable response discrepancy in floating-point operations for some Intel(R) Processors may allow an authorized user to potentially enable information disclosure via local access.

UnknownCVSS not scoredNot KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This is a local information disclosure issue tied to observable differences in floating-point behavior on some Intel processors. The bundle does not provide a CVSS score, confirmed exploitation, or detailed impact. Exposure appears limited to users or processes that already have local authorized access.

Executive priority

Treat this as a scoped Intel local information disclosure issue, not an emergency remote compromise based on available evidence. Prioritize validation on shared-user systems and follow Intel guidance where applicable.

Technical view

CVE-2021-0086 describes an observable response discrepancy in floating-point operations that may allow information disclosure via local access. The source bundle lists Intel Brand Verification Tool before 11.0.0.1225 as affected, which does not fully align with the processor-focused description, so asset scoping should be cautious.

Likely exposure

Likely exposure is local systems with affected Intel components or the listed Intel Brand Verification Tool version before 11.0.0.1225. The bundle does not identify remote exposure, unauthenticated attack paths, or specific processor models.

Exploitation context

No active exploitation is evidenced in the bundle, and KEV status is false. The described attacker is an authorized local user. No exploit maturity, public proof of concept, or weaponization evidence is provided.

Researcher notes

The source data is incomplete and partly inconsistent: the description references Intel processors, while the affected entry names Intel Brand Verification Tool. Avoid broad processor-impact claims unless Intel advisory details confirm the affected platforms.

Mitigation direction

  • Check Intel advisories INTEL-SA-00516 and INTEL-SA-00546 for vendor-specific guidance.
  • Update Intel Brand Verification Tool to version 11.0.0.1225 or later if present.
  • Review Intel platform and microcode update guidance for affected processor context.
  • Prioritize systems where untrusted users can obtain local access.
  • Monitor vendor advisories for clarified affected hardware and remediation details.

Validation and detection

  • Inventory endpoints and servers for Intel Brand Verification Tool versions.
  • Confirm whether any installed version is older than 11.0.0.1225.
  • Review Intel advisory applicability against deployed Intel processor platforms.
  • Check vulnerability scanners for CVE-2021-0086 detections and evidence.
  • Document systems with shared local access or multi-user workloads.
Prepared
Confidence
medium
Sources
4

Public sources used

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

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2021-0086 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
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.

0CVSS vectors
0Timeline events
0ADP providers
5Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/aIntel(R) Brand Verification Toolbefore version 11.0.0.1225Listed
Weakness

CWE details

No CWE listed

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