CVE-2021-46763 json
Insufficient input validation in the SMU may enable a privileged attacker to write beyond the intended bounds of a shared memory buffer pot…
published 2023-05-09 3 y ago modified 2026-06-17 4 mo ago also EUVD-2021-33419
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 42%
- public exploits
- 0
- none known
Summary
Insufficient input validation in the SMU may enable a privileged attacker to write beyond the intended bounds of a shared memory buffer potentially leading to a loss of integrity.
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 21 mo ago
Exploit prediction
0.49% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
Affected products
- AMD 2nd Gen AMD EPYC™
- AMD 3rd Gen AMD EPYC™
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
amd.com
/en/corporate/product-security/bulletin/AMD-SB-3001
vendor-advisory
Sources
- CVE List CVE-2021-46763
- NVD CVE-2021-46763
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