Security readout for executives and security teams
Plain-English summary
CVE-2021-0154 is a BIOS firmware input-validation flaw affecting some Intel processors. A local user with privileges could potentially gain higher privileges. This is high severity because successful exploitation could affect confidentiality, integrity, and availability, but the provided sources do not show remote exploitation or confirmed active exploitation.
Executive priority
Prioritize remediation for systems where local users, administrators, tenants, or appliance operators can access affected platforms. This is not presented as remotely exploitable in the provided evidence, but privilege escalation in firmware can materially increase compromise impact once an attacker has local access.
Technical view
The CVE describes improper input validation in BIOS firmware for some Intel processors, mapped to CWE-20. CVSS 3.1 is 7.8: local attack vector, low complexity, low privileges required, no user interaction, and high impact across confidentiality, integrity, and availability.
Likely exposure
Exposure is likely limited to systems using affected Intel processor platforms and vulnerable BIOS firmware. The source bundle does not include the exact affected processor, BIOS, OEM, or appliance version list, so validation must use Intel SA-00601 and relevant vendor advisories such as NetApp’s notice.
Exploitation context
The provided CVSS vector indicates exploitation requires local access and low privileges. The CVE is not listed as KEV in the bundle, and no cited source in the bundle confirms active exploitation. Treat it as a serious local privilege-escalation risk, especially on shared, kiosk, server, or appliance environments.
Researcher notes
Evidence is limited to the CVE metadata and advisory references. The key technical indicators are CWE-20, BIOS firmware scope, and CVSS AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Do not assume affected models or fixes beyond Intel and vendor advisory confirmation.
Mitigation direction
- Review Intel SA-00601 for affected platforms and vendor remediation guidance.
- Check OEM, server, motherboard, and appliance vendors for BIOS or firmware updates.
- Apply vendor-provided BIOS or firmware updates during controlled maintenance windows.
- Review NetApp guidance if affected Intel platforms are used in NetApp products.
- Restrict local privileged access while remediation is pending.
Validation and detection
- Inventory Intel processor platforms and current BIOS or firmware versions.
- Compare inventory against Intel SA-00601 and OEM advisory details.
- Check whether any NetApp systems match the NetApp advisory scope.
- Confirm remediation by verifying BIOS or firmware versions after update.
- Document systems that remain dependent on pending vendor guidance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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.
CWE-20: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-0154 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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.
CVSS vector scores
1 official scoreWe 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.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00601.htmlCVE reference · x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20220818-0003/CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.