Security readout for executives and security teams
Plain-English summary
This is a BIOS firmware flaw affecting some Intel processors. A local authenticated user could potentially raise privileges on the system. It is not a remote internet-facing issue, but successful abuse could undermine host integrity and confidentiality at a low firmware layer.
Executive priority
Treat this as a high-priority firmware hygiene issue, especially for sensitive systems. It is not described as remotely exploitable, but firmware-level privilege escalation can materially increase the impact of an already-compromised local account.
Technical view
CVE-2021-33060 is a CWE-787 out-of-bounds write in BIOS firmware for some Intel processors. CVSS 3.1 is 7.8, with local access, low complexity, low privileges, no user interaction, unchanged scope, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely on servers, workstations, or appliances using affected Intel processors and vulnerable BIOS firmware. The provided bundle does not enumerate exact processor generations, OEM firmware builds, or affected NetApp products.
Exploitation context
The source bundle does not show CISA KEV listing or other evidence of active exploitation. Exploitation requires local access by an authenticated user, so risk rises on shared systems, compromised endpoints, and environments with weak local privilege separation.
Researcher notes
The bundle supports high severity but not active exploitation. Exact affected processor lists and fixed firmware revisions are not present in the provided text, so validation depends on Intel SA-00686, OEM mappings, and NetApp’s advisory where relevant.
Mitigation direction
- Review Intel SA-00686 and OEM firmware guidance for affected platforms.
- Apply vendor-provided BIOS or firmware updates where your hardware is listed.
- Check NetApp advisory applicability for any NetApp-managed systems or appliances.
- Prioritize shared servers, administrative workstations, and high-value endpoints.
- If no update exists, follow vendor mitigation guidance and reduce local access exposure.
Validation and detection
- Inventory Intel processor models and BIOS firmware versions across managed assets.
- Map each platform against Intel, OEM, and NetApp advisory guidance.
- Confirm updated systems report the expected fixed BIOS or firmware version.
- Review endpoint controls for unnecessary local user privileges.
- Track exceptions where vendor applicability or firmware availability remains unclear.
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-787: 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-2021-33060 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-00686.htmlCVE reference · x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20220930-0004/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.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.