CVE-2021-26400
MEDIUMCVSS 4/10EPSS 0.23%
Last modified
CVE-2021-26400 is a medium-severity vulnerability rated 4/10 on the CVSS scale. 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.. EPSS estimates a 0.23% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Amd | Cpu | All versions |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-26400?
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.
How severe is CVE-2021-26400?
CVE-2021-26400 has a CVSS score of 4/10 (MEDIUM severity). The EPSS model estimates a 0.23% probability of exploitation in the next 30 days.
How do I fix CVE-2021-26400?
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.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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Are you affected by CVE-2021-26400?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST