CVE-2021-26407 json
A randomly generated Initialization Vector (IV) may lead to a collision of IVs with the same key potentially resulting in information discl…
published 2023-01-10 3 y ago modified 2026-06-17 4 mo ago also EUVD-2021-13213
- cvss
- 5.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 8%
- public exploits
- 0
- none known
Summary
A randomly generated Initialization Vector (IV) may lead to a collision of IVs with the same key potentially resulting in information disclosure.
Patch / fix
- amd romepi_firmware 1.0.0.a
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 19 mo ago
Exploit prediction
0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| CNA | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
Affected products
- AMD 2nd Gen EPYC
Classification
- Weakness
-
- CWE-330 Use of Insufficiently Random Values
References
-
amd.com
/en/corporate/product-security/bulletin/AMD-SB-1032
vendor-advisory
Sources
- CVE List CVE-2021-26407
- NVD CVE-2021-26407
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