Auth bypass in Intel(r) Slim Bootloader

CVE-2025-20083

Improper authentication in the firmware for the Intel(R) Slim Bootloader may allow a privileged user to potentially enable escalation of privilege via local access.

Vulnerability class: Broken Authentication

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (4.0th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.0% 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-2025-20083: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

  • Intel(r) Slim Bootloader — versions See references

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-20083?
CVE-2025-20083 is a high-severity vulnerability in Intel(r) Slim Bootloader, classified under Improper Authentication. CVSS score: 7.5/10. Published 2025-05-13.
How severe is CVE-2025-20083?
High severity. CVSS v3 base score is 7.5 out of 10.