CVE-2021-26383: Memory Corruption (CVSS 7.9)

Description

Insufficient bounds checking in AMD TEE (Trusted Execution Environment) could allow an attacker with a compromised userspace to invoke a command with malformed arguments leading to out of bounds memory access, potentially resulting in loss of integrity or availability.

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CVSS v3.1 Score

7.9

HIGH

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H

Weakness Type (CWE)

CWE-787 Out-of-bounds Write

References

Other References

https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-4012.html https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-5007.html https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-6018.html

Frequently Asked Questions

What is CVE-2021-26383? +

Insufficient bounds checking in AMD TEE (Trusted Execution Environment) could allow an attacker with a compromised userspace to invoke a command with malformed arguments leading to out of bounds memory access, potentially resulting in loss of integrity or availability. It has a CVSS v3.1 base score of 7.9 (HIGH).

How severe is CVE-2021-26383? +

CVE-2021-26383 has a CVSS v3.1 score of 7.9 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

How do I check if I'm vulnerable to CVE-2021-26383? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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