CVE-2021-26322 json
Persistent platform private key may not be protected with a random IV leading to a potential “two time pad attack”.
published 2021-11-16 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-13128
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 64%
- public exploits
- 0
- none known
Summary
Persistent platform private key may not be protected with a random IV leading to a potential “two time pad attack”.
Patch / fix
- AMD 1st Gen AMD EPYC™ NaplesPI-SP3_1.0.0.G
- AMD 2nd Gen AMD EPYC™ RomePI-SP3_1.0.0.C
- AMD 3rd Gen AMD EPYC™ MilanPI-SP3_1.0.0.4
Exploit prediction
1.05% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Affected products
- AMD 1st Gen AMD EPYC™
- AMD 2nd Gen AMD EPYC™
- AMD 3rd Gen AMD EPYC™
Classification
References
-
amd.com
/en/corporate/product-security/bulletin/amd-sb-1021
vendor-advisory
Sources
- CVE List CVE-2021-26322
- NVD CVE-2021-26322
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