What’s Vulnerable › Vulnerabilities

CVE-2021-26400

• Severity: medium (CVSS 4.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-05-11 · updated 2026-06-17

Description

AMD processors may speculatively re-order load instructions which can result in stale data being observed when multiple processors are operating on shared memory, resulting in potential data leakage.

Affected products

• AMD CPU: all versions

References

• https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1035
• https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1035

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