CVE-2021-46794: amd 3rd gen amd ryzen™ threadripper™ processors “castle peak” hedt Out-of-bounds Read
CVSS: 7.5v3.1HighModified
Published 09-05-2023Last modified 28-01-2025
Vulnerability summary
CVE-2021-46794 is a high (CVSS 7.5) Out-of-bounds Read vulnerability in amd 3rd gen amd ryzen™ threadripper™ processors “castle peak” hedt. EPSS estimates a 0.62% chance of exploitation in the next 30 days, higher than 48.5% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (CVE.org)EPSS score
0.62%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 09-05-2023PublishedVulnerability first disclosed.
- 28-01-2025Last modifiedVulnerability information updated.
Description
Insufficient bounds checking in ASP (AMD Secure Processor) may allow for an out of bounds read in SMI (System Management Interface) mailbox checksum calculation triggering a data abort, resulting in a potential denial of service.
CVSS metrics
2 scores · 2 sources · 1 versionHigh 7.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 2 agree
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.62%
Chance of exploitation in the next 30 days
Percentile
49%
Versus all other CVEs
30-day change
0.00 pp
From 0.62% on 20-09-2026
20-09-202620-10-2026
EPSS score0.62%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Amd70 products
- 3rd gen amd ryzen™ threadripper™ processors “castle peak” hedtvarious
- amd ryzen™ 5000 series desktop processors “vermeer” am4various
- athlon_gold_3150g_firmwarepicassopi-fp5_1.0.0.e | pollockpi-ft5_1.0.0.4
- athlon_gold_3150ge_firmwarepicassopi-fp5_1.0.0.e | pollockpi-ft5_1.0.0.4
- athlon_silver_3050ge_firmwarepicassopi-fp5_1.0.0.e | pollockpi-ft5_1.0.0.4
1 vendor · 70 products