Security readout for executives and security teams
Plain-English summary
This is a high-severity AMD Secure Processor issue. A local attacker with some existing privileges and a malicious TA could read or modify secure OS kernel memory, which may enable privilege escalation. Business urgency depends on whether deployed Ryzen Embedded 5000 or V2000 systems match AMD's affected configurations.
Executive priority
Treat as a high-priority platform security review for embedded AMD assets, especially where local access is plausible. Do not assume broad exposure without confirming AMD bulletin applicability.
Technical view
The flaw is insufficient memory buffer checking in ASP Secure OS, mapped to CWE-119. The CVSS 3.1 score is 7.8: local access, low complexity, low privileges, no user interaction, with high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most relevant for organizations running AMD Ryzen Embedded 5000 or Ryzen Embedded V2000 platforms. The provided sources do not enumerate exact vulnerable firmware, OEM systems, or version ranges, so teams must verify applicability against AMD-SB-5001 and their hardware inventory.
Exploitation context
The source bundle does not show CISA KEV listing or any cited evidence of active exploitation. Exploitation requires local access, low privileges, and a malicious TA; this is not described as remotely exploitable.
Researcher notes
Focus analysis on ASP Secure OS memory boundary checking and TA interaction. The public bundle gives impact and CVSS details, but lacks exact vulnerable builds, patch identifiers, exploit indicators, or proof-of-concept status.
Mitigation direction
- Review AMD-SB-5001 for affected configurations and vendor-recommended updates.
- Inventory Ryzen Embedded 5000 and V2000 systems in production environments.
- Check OEM firmware or platform advisories tied to the AMD bulletin.
- Prioritize remediation on shared, kiosk, edge, or physically exposed systems.
Validation and detection
- Confirm processor family and firmware baseline for embedded AMD systems.
- Compare each platform against AMD-SB-5001 applicability details.
- Verify update status through OEM management tools or firmware inventory.
- Document systems where applicability cannot be determined from available evidence.
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-119: 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-2021-46757 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.amd.com/en/corporate/product-security/bulletin/AMD-SB-5001CVE reference · vendor-advisory
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 Restriction of Operations within the Bounds of a Memory Buffer
Improper Restriction of Operations within the Bounds of a Memory Buffer represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.