CVE-2024-21977
LOWCVSS 3.2/10EPSS 0.14%
Last modified
CVE-2024-21977 is a low-severity vulnerability rated 3.2/10 on the CVSS scale. Incomplete cleanup after loading a CPU microcode patch may allow a privileged attacker to degrade the entropy of the RDRAND instruction, potentially resulting in loss of integrity for SEV-SNP guests.. EPSS estimates a 0.14% chance of exploitation in the next 30 days.
Description
Incomplete cleanup after loading a CPU microcode patch may allow a privileged attacker to degrade the entropy of the RDRAND instruction, potentially resulting in loss of integrity for SEV-SNP guests.
Metrics
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:N
Weakness Enumeration
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2024-21977?
Incomplete cleanup after loading a CPU microcode patch may allow a privileged attacker to degrade the entropy of the RDRAND instruction, potentially resulting in loss of integrity for SEV-SNP guests.
How severe is CVE-2024-21977?
CVE-2024-21977 has a CVSS score of 3.2/10 (LOW severity). The EPSS model estimates a 0.14% probability of exploitation in the next 30 days.
How do I fix CVE-2024-21977?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2024-21977?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST