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CVE-2023-20540

LOW
1.8
CVSS Score
Published: June 26, 2026 at 03:44 PM UTC
Updated: June 27, 2026 at 11:42 AM UTC
Products not identified yet

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Severity
LOW1.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

We have no canonical product record for this CVE. The source names may not have matched any product.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://www.amd.com/en/resources/product-security/bulletin/amd-sb-4012.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

1.8LOWAMD
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-208

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