CVE-2021-26340
high-risk
Published 2021-12-10
A malicious hypervisor in conjunction with an unprivileged attacker process inside an SEV/SEV-ES guest VM may fail to flush the Translation Lookaside Buffer (TLB) resulting in unexpected behavior inside the virtual machine (VM).
Do I need to act?
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0.06% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.4/10
High
LOCAL
/ LOW complexity
Affected Products (20)
Affected Vendors
References (2)
56
/ 100
high-risk
Severity
26/34 · High
Exploitability
0/34 · Minimal
Exposure
30/34 · Critical