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CVE-2023-20540

LOW
1.8
CVSS 4.0
Description
An observable timing discrepancy in the ASP could allow a privileged attacker to perform a brute-force attack against the hash message authentication code, allowing arbitrary message input, potentially leading to a loss of data integrity.

Metadata

CVE ID
CVE-2023-20540
State
PUBLISHED
Assigner
AMD
Reserved
2022-10-27 18:53 UTC
Published
2026-06-26 15:44 UTC
Last updated
2026-06-26 16:00 UTC
Primary CWE
CWE-208
CWE-208 Observable timing discrepancy
Vendor / Product
AMD / AMD Ryzen™ 3000 Series Desktop Processors
Sources
cve.org  ·  NVD

Severity & Metrics

1.8 LOW CVSS 4.0
CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
SSVC — CISA Coordinator
Exploitation
none
Automatable
no
Tech. Impact
partial
Affected products (5)
VendorProductPlatformVersions
AMD AMD Ryzen™ 3000 Series Desktop Processors — ComboAM4 1.0.0.E, ComboAM4v2PI 1.2.0.CA
AMD AMD Ryzen™ 5000 Series Desktop Processors — ComboAM4v2PI 1.2.0.CA
AMD AMD Ryzen™ Threadripper™ 3000 Series Processors — CastlePeakPI-SP3r3 1.0.0.C
AMD AMD Ryzen™ Threadripper™ PRO 3000WX Series Processors — CastlePeakWSPI-sWRX8 1.0.0.E
AMD AMD Ryzen™ Threadripper™ PRO 5000 WX-Series Processors — ChagallWSPI-sWRX8 1.0.0.9
Weakness (CWE)
CWESourceDescription
CWE-208 cna CWE-208 Observable timing discrepancy
CVSS scores (1)
ScoreSeverityVersionSourceVector
1.8 LOW 4.0 cna CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
References (1)
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