Security readout for executives and security teams
Plain-English summary
CVE-2021-26410 is a low-severity AMD Secure Processor issue. A highly privileged local attacker may cause kernel memory values to be read in a way that could disclose limited information. This is not a remote compromise scenario based on the provided sources.
Executive priority
Handle through normal vulnerability and firmware maintenance cycles unless affected systems process highly sensitive workloads. Prioritize validation for shared workstations, high-trust endpoints, and embedded deployments where firmware updates are slower.
Technical view
The issue is improper syscall input validation in AMD Secure Processor firmware/software. The CVSS v4.0 score is 1.8 with local access, high attack complexity, and high privileges required. Potential impact is limited confidentiality and integrity exposure, with no availability impact indicated.
Likely exposure
Exposure is limited to systems using the AMD Ryzen, Ryzen Embedded, Radeon RX, and Radeon PRO product families listed by AMD and the CVE record. Validation requires matching hardware and applicable AMD platform, firmware, or driver guidance.
Exploitation context
The source bundle does not indicate active exploitation, and CISA KEV status is false. Exploitation requires local access and high privileges, making broad enterprise exploitation less likely than typical remote vulnerabilities.
Researcher notes
Do not assume remote exploitability. The vulnerability centers on ASP syscall input validation and potential kernel memory inference. The provided evidence does not include exploit details, proof-of-concept status, or independent exploitation reports.
Mitigation direction
- Review AMD SB-6024 and SB-4013 for product-specific guidance.
- Apply AMD or OEM-provided firmware, BIOS, and driver updates where applicable.
- For Radeon PRO V520/V620, contact AMD Customer Engineering as directed.
- Track systems awaiting OEM firmware or embedded platform updates.
Validation and detection
- Inventory systems using affected AMD Ryzen, Ryzen Embedded, Radeon RX, and Radeon PRO products.
- Compare installed firmware, BIOS, and driver levels against AMD bulletin guidance.
- Confirm whether affected devices use OEM-managed update channels.
- Document systems where AMD directs customer engineering engagement.
- Monitor AMD advisories for any updated remediation details.
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
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ATT&CK lookup starting points
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Open ATT&CK lookupCVE-2021-26410 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
- Low
- CVSS
- 1.8 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA: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:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
1.8LowVector: CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Source materials
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.
Untrusted Pointer Dereference
Untrusted Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.