CVE-2023-20576

CVE-2023-20576

Insufficient Verification of Data Authenticity in AGESA™ may allow an attacker to update SPI ROM data potentially resulting in denial of service or privilege escalation.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

EPSS exploit prediction

EPSS: 0.001 (2.0th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 2.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2023-20576: held from 0.001 to 0.001.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2023-20576?
CVE-2023-20576 is a high-severity vulnerability, classified under Insufficient Verification of Data Authenticity. CVSS score: 7.7/10. Published 2026-09-02.
How severe is CVE-2023-20576?
High severity. CVSS v3 base score is 7.7 out of 10.