CVE-2021-26344
7.2 · HIGHOverview
CVE-2021-26344 is a high-severity vulnerability affecting amd epyc_7203_firmware. It was published on August 13, 2024 and has a CVSS 3.1 base score of 7.2 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
An out of bounds memory write when processing the AMD
PSP1 Configuration Block (APCB) could allow an attacker with access the ability
to modify the BIOS image, and the ability to sign the resulting image, to
potentially modify the APCB block resulting in arbitrary code execution.
Remediation
Check the references section for vendor advisories and patches from amd. Update epyc_7203_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_7203_firmware | >= 0, < milanpi_1.0.0.5 | Affected |
| amd | epyc_7203p_firmware | >= 0, < milanpi_1.0.0.5 | Affected |
| amd | epyc_72f3_firmware | >= 0, < milanpi_1.0.0.5 | Affected |
| amd | epyc_7303_firmware | >= 0, < milanpi_1.0.0.5 | Affected |
| amd | epyc_7303p_firmware | >= 0, < milanpi_1.0.0.5 | Affected |
| amd | epyc_7313_firmware | >= 0, < milanpi_1.0.0.5 | Affected |
| amd | epyc_7313p_firmware | >= 0, < milanpi_1.0.0.5 | Affected |
| amd | epyc_7343_firmware | >= 0, < milanpi_1.0.0.5 | Affected |
| amd | epyc_73f3_firmware | >= 0, < milanpi_1.0.0.5 | Affected |
| amd | epyc_7373x_firmware | >= 0, < milanpi_1.0.0.5 | Affected |
Frequently Asked Questions
What is CVE-2021-26344?
CVE-2021-26344 is a high-severity vulnerability affecting amd epyc_7203_firmware. It was published on August 13, 2024 and has a CVSS 3.1 base score of 7.2 (HIGH).
How severe is CVE-2021-26344?
This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-26344?
Check the references section for vendor advisories and patches from amd. Update epyc_7203_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-2021-26344?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-26344 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.
Automated penetration testing that runs continuously, not just quarterly.
AI-driven PR review catches vulnerable dependencies before they ship.
Browser-based exploitation validates findings with real proof-of-concept.
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