Security readout for executives and security teams
Plain-English summary
This CVE concerns Intel AMT USB provisioning where credentials were insufficiently protected. A person with physical access could potentially disclose sensitive credentials or information. The business risk is mainly for organizations using Intel AMT provisioning workflows on managed endpoints, especially where devices or provisioning media are physically accessible.
Executive priority
Treat this as a targeted physical-access confidentiality risk, not an internet-wide emergency. Prioritize environments using Intel AMT provisioning, shared devices, and locations with weaker physical controls. Remediate through version updates and tightened provisioning handling.
Technical view
CVE-2021-33107 is a CWE-522 credential protection issue in USB provisioning affecting Intel AMT SDK before 16.0.3, Intel SCS before 12.2, and specified Intel MEBx versions. CVSS 3.1 is 4.6 with physical attack vector, low complexity, no privileges, no user interaction, and high confidentiality impact.
Likely exposure
Exposure is most likely where Intel AMT, Intel SCS, or MEBx-based provisioning is used, especially with USB provisioning. Systems not using these provisioning components or without physical access risk have lower exposure, but version verification is still needed.
Exploitation context
The bundle does not identify public exploitation or CISA KEV listing. Exploitation requires physical access according to the CVSS vector, limiting internet-scale risk but increasing concern for shared offices, labs, supply chains, and uncontrolled endpoint access.
Researcher notes
The public bundle provides affected version ranges, CVSS, CWE-522, and Intel advisory references, but limited implementation detail. Do not assume remote exploitability, integrity impact, or active exploitation without additional vendor or threat-intelligence evidence.
Mitigation direction
- Update Intel AMT SDK to version 16.0.3 or later.
- Update Intel SCS to version 12.2 or later.
- Update Intel MEBx to the applicable fixed version or later.
- Review Intel advisories for platform-specific firmware or provisioning guidance.
- Restrict physical access to AMT-managed endpoints and provisioning USB media.
Validation and detection
- Inventory endpoints and tooling using Intel AMT, Intel SCS, or MEBx provisioning.
- Confirm installed AMT SDK, SCS, and MEBx versions against affected version ranges.
- Identify whether USB provisioning is enabled or used operationally.
- Review physical access controls for managed endpoints and provisioning materials.
- Check Intel advisory applicability for each hardware and firmware line.
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-522: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. 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-2021-33107 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
- 4.6 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N0.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.6MediumVector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00575.htmlCVE reference · x_refsource_MISC
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00601.htmlCVE 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.
Insufficiently Protected Credentials
Insufficiently Protected Credentials represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.