Security readout for executives and security teams
Plain-English summary
This is a firmware-level Intel processor issue in BIOS authenticated code. An attacker would already need privileged local access, but successful abuse could raise privileges and affect confidentiality, integrity, and availability. Treat it as important for firmware governance, not as an internet-exposed emergency from the provided evidence.
Executive priority
Handle through the firmware patch and asset-risk program. It is not flagged as actively exploited in the provided evidence, but firmware privilege escalation can materially increase damage after initial compromise.
Technical view
CVE-2021-33124 is a CWE-787 out-of-bounds write in the BIOS authenticated code module for some Intel processors. CVSS 3.1 is 6.7 with local access and high privileges required, but high impact across confidentiality, integrity, and availability.
Likely exposure
Exposure is limited to systems using Intel processors covered by Intel-SA-00601. The provided bundle does not list exact processor models, firmware versions, or NetApp product versions, so asset matching requires vendor advisory review.
Exploitation context
The source bundle does not show KEV listing or active exploitation. The attack path is local and requires high privileges, which reduces broad exploitability but matters on shared, managed, or already-compromised systems.
Researcher notes
The evidence identifies class, location, privilege requirement, and CVSS vector, but not affected model details or patch versions. Avoid assuming exploit availability or remediation specifics beyond Intel, OEM, and NetApp guidance.
Mitigation direction
- Check Intel-SA-00601 for affected processor and firmware guidance.
- Check OEM BIOS or firmware advisories for each affected platform.
- Review NetApp advisory if NetApp systems are in scope.
- Restrict local administrative access to trusted operators only.
- Prioritize confirmed affected systems with shared-user or high-value workloads.
Validation and detection
- Inventory systems using Intel processors referenced by Intel-SA-00601.
- Compare BIOS and firmware versions against vendor advisory guidance.
- Identify NetApp appliances that map to the NetApp advisory.
- Confirm local privileged access is limited and monitored.
- Document systems where applicability remains unknown.
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-2021-33124 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
- Medium
- CVSS
- 6.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:H/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:H/UI:N/S:U/C:H/I:H/A:H0.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.7MediumVector: CVSS:3.1/AV:L/AC:L/PR:H/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.
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.