CVE-2024-21947

HIGH
Published Sep 6, 2025 Modified Apr 15, 2026 CWE-1220

Description

Improper input validation in the system management mode (SMM) could allow a privileged attacker to overwrite arbitrary memory potentially resulting in arbitrary code execution at the SMM level.

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CVSS v3.1 Score

7.5
HIGH
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Weakness Type (CWE)

CWE-1220 CWE-1220

References

Frequently Asked Questions

What is CVE-2024-21947? +
Improper input validation in the system management mode (SMM) could allow a privileged attacker to overwrite arbitrary memory potentially resulting in arbitrary code execution at the SMM level. It has a CVSS v3.1 base score of 7.5 (HIGH).
How severe is CVE-2024-21947? +
CVE-2024-21947 has a CVSS v3.1 score of 7.5 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-2024-21947? +
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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