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CVE Record

CVE-2020-0591: Improper buffer restrictions in BIOS firmware for some Intel(R) Processors may allow a privileged user to p...

Improper buffer restrictions in BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2020-0591 is a BIOS firmware flaw affecting some Intel processors. A user who already has privileged local access could potentially escalate privileges further. The provided sources do not give CVSS scoring or detailed affected versions in the bundle, so exposure depends on matching hardware and vendor advisories.

Executive priority

Handle as a targeted firmware risk, not an internet-wide emergency. Prioritize high-value systems and environments where local administrative compromise would materially increase business impact.

Technical view

The issue is described as improper buffer restrictions in BIOS firmware for some Intel processors. The attack path is local and requires a privileged user. Confirmed references include Intel-SA-00358 plus downstream NetApp and Siemens advisories, but the provided bundle does not include precise affected product lists or remediation details.

Likely exposure

Organizations may be exposed where systems use Intel processor platforms covered by Intel-SA-00358 or downstream vendor advisories. Exact exposure requires checking hardware models, BIOS firmware versions, and vendor-specific affected-product lists.

Exploitation context

The bundle does not indicate active exploitation, and the CVE is not listed as KEV. The described prerequisite is local access by a privileged user, which reduces remote exploitation likelihood but still matters for post-compromise escalation risk.

Researcher notes

Evidence is limited to the CVE description and referenced advisories. Do not assume affected models, exploitability details, or fixes beyond vendor guidance. The key research task is mapping Intel-SA-00358 and downstream advisories to deployed hardware.

Mitigation direction

  • Review Intel-SA-00358 for affected processors and BIOS guidance.
  • Check OEM, NetApp, and Siemens advisories for product-specific updates.
  • Prioritize BIOS firmware updates on confirmed affected systems.
  • Restrict local administrative access to systems pending firmware validation.
  • Track firmware update completion through asset management records.

Validation and detection

  • Inventory Intel-based systems and record BIOS firmware versions.
  • Compare hardware and firmware against Intel-SA-00358 and vendor advisories.
  • Confirm whether NetApp or Siemens products are present in scope.
  • Verify vendor-recommended BIOS or firmware updates are installed.
  • Document systems not covered by available vendor guidance.
Prepared
Confidence
medium
Sources
5

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

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CVE-2020-0591 mapping review

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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
4Source 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) ProcessorsSee referencesListed
Weakness

CWE details

No CWE listed

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