CVE-2023-20526: amd 1st gen amd epyc™ processors
Vulnerability summary
CVE-2023-20526 is a medium (CVSS 4.6) vulnerability in amd 1st gen amd epyc™ processors. EPSS estimates a 0.31% chance of exploitation in the next 30 days, higher than 23.8% of scored vulnerabilities.
Not severe (CVSS 1.9, physical access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 8 · Related 8Timeline
- 14-11-2023PublishedVulnerability first disclosed.
- 02-08-2024Last modifiedVulnerability information updated.
Description
Insufficient input validation in the ASP Bootloader may enable a privileged attacker with physical access to expose the contents of ASP memory potentially leading to a loss of confidentiality.
CVSS metrics
2 scores · 2 sources · 1 version- CVE.orgCNA1.9LowCVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:NDiffers
EPSS trend
Probability
0.31%
Chance of exploitation in the next 30 days
Percentile
24%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.31% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: physical access, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Amd80 products
- 1st gen amd epyc™ processorsvarious
- 2nd gen amd epyc™ processorsvarious
- 3rd gen amd epyc™ processorsvarious
- amd epyc™ embedded 3000various
- amd epyc™ embedded 7002various
1 vendor · 80 products