CVE-2023-20527: amd 1st gen epyc Improper Input Validation
CVSS: 6.5v3.1MediumModified
Published 10-01-2023Last modified 07-04-2025
Vulnerability summary
CVE-2023-20527 is a medium (CVSS 6.5) Improper Input Validation vulnerability in amd 1st gen epyc. EPSS estimates a 0.60% chance of exploitation in the next 30 days, higher than 47.4% of scored vulnerabilities.
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)EPSS score
0.60%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 10-01-2023PublishedVulnerability first disclosed.
- 07-04-2025Last modifiedVulnerability information updated.
Description
Improper syscall input validation in the ASP Bootloader may allow a privileged attacker to read memory out-of-bounds, potentially leading to a denial-of-service.
CVSS metrics
2 scores · 2 sources · 1 versionMedium 6.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HSourcesAll 2 agree
- NVDNIST6.5MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.60%
Chance of exploitation in the next 30 days
Percentile
47%
Versus all other CVEs
30-day change
0.00 pp
From 0.60% on 19-09-2026
19-09-202619-10-2026
EPSS score0.60%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Amd67 products
- 1st gen epycvarious
- 2nd gen epycvarious
- 3rd gen epycvarious
- epyc_7001_firmware< naplespi_1.0.0.g
- epyc_7002_firmware< romepi_1.0.0.c
1 vendor · 67 products