Security readout for executives and security teams
Plain-English summary
CVE-2023-20548 is a race-condition flaw in the AMD Secure Processor affecting listed Radeon and Instinct GPU products. A local, low-privileged attacker could corrupt memory, potentially impacting confidentiality, integrity, or availability. Business urgency is highest for shared workstations, VDI, AI, or HPC systems where untrusted users can run local workloads.
Executive priority
Treat as a high-priority patch and exposure review for shared GPU infrastructure. Single-user endpoints are less urgent, but still need vendor-status confirmation. Assets with no planned fix require a business decision on replacement, isolation, or documented risk acceptance.
Technical view
The issue is CWE-367 TOCTOU in AMD Secure Processor. CVSS 4.0 is 7.1 High: local attack vector, low privileges, no user interaction, high complexity. AMD lists affected Radeon RX/PRO 5000, Radeon VII/PRO VII, and Instinct MI210/MI250/MI300X/MI300A product lines with associated AMD Software or ROCm entries.
Likely exposure
Exposure is local, not network-direct. Systems are most exposed where multiple users, tenants, or workloads can access affected AMD GPUs. Consumer desktops with a single trusted user have lower practical exposure than shared engineering, rendering, AI, or HPC environments.
Exploitation context
The source bundle does not indicate CISA KEV listing or active exploitation. Exploitation requires local access and low privileges, with high attack complexity. The impact could include memory corruption affecting integrity, confidentiality, or availability.
Researcher notes
Evidence is limited to the CVE record and AMD bulletin reference. Do not assume remote exploitability. Focus validation on local access paths, GPU model, installed AMD software or ROCm version, and whether AMD provides an update or lists no fix planned for the asset.
Mitigation direction
- Review AMD-SB-6024 for the affected product and software status.
- Apply AMD-listed driver, software, or ROCm updates where available.
- For Radeon VII and Radeon PRO VII, AMD lists no fix planned; assess replacement or risk acceptance.
- Restrict local access to affected shared GPU systems.
- Prioritize shared AI, HPC, VDI, and engineering workstations.
Validation and detection
- Inventory systems using the affected AMD Radeon and Instinct products.
- Record AMD Software, PRO Edition, or ROCm versions installed.
- Compare inventory against AMD-SB-6024 product entries.
- Identify Radeon VII and Radeon PRO VII assets separately.
- Check whether untrusted local users can access affected GPU systems.
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-367: 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-2023-20548 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
- 7.1 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:L/SI:H/SA:L
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:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:L/SI:H/SA:L——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
7.1HighVector: CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:L/SI:H/SA:L
Source materials
- CVE List V5 sourceCVE List V5
- https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-6024.htmlCVE reference
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.
Time-of-check Time-of-use (TOCTOU) Race Condition
Time-of-check Time-of-use (TOCTOU) Race Condition represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.