CVE-2023-20521
3.3 · LOWOverview
CVE-2023-20521 is a low-severity vulnerability affecting amd epyc_7001_firmware. It was published on November 14, 2023 and has a CVSS 3.1 base score of 3.3 (LOW).
This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
TOCTOU in the ASP Bootloader may allow an attacker with physical access to tamper with SPI ROM records after memory content verification, potentially leading to loss of confidentiality or a denial of service.
Remediation
Check the references section for vendor advisories and patches from amd. Update epyc_7001_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| amd | epyc_7001_firmware | >= 0, < naplespi_1.0.0.h | Affected |
| amd | epyc_7251_firmware | >= 0, < naplespi_1.0.0.h | Affected |
| amd | epyc_7261_firmware | >= 0, < naplespi_1.0.0.h | Affected |
| amd | epyc_7281_firmware | >= 0, < naplespi_1.0.0.h | Affected |
| amd | epyc_7301_firmware | >= 0, < naplespi_1.0.0.h | Affected |
| amd | epyc_7351_firmware | >= 0, < naplespi_1.0.0.h | Affected |
| amd | epyc_7351p_firmware | >= 0, < naplespi_1.0.0.h | Affected |
| amd | epyc_7371_firmware | >= 0, < naplespi_1.0.0.h | Affected |
| amd | epyc_7401_firmware | >= 0, < naplespi_1.0.0.h | Affected |
| amd | epyc_7401p_firmware | >= 0, < naplespi_1.0.0.h | Affected |
References
Frequently Asked Questions
What is CVE-2023-20521?
CVE-2023-20521 is a low-severity vulnerability affecting amd epyc_7001_firmware. It was published on November 14, 2023 and has a CVSS 3.1 base score of 3.3 (LOW).
How severe is CVE-2023-20521?
This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2023-20521?
Check the references section for vendor advisories and patches from amd. Update epyc_7001_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2023-20521?
CyberStrike's AI-powered security agents can automatically detect CVE-2023-20521 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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