CVE-2020-5378

Name: CVE-2020-5378
Creator: NVD / NIST
Published: 2020-09-02T21:15:12.86+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.8/10EPSS 0.39%

Last modified Jun 17, 2026

CVE-2020-5378 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. Dell G7 17 7790 BIOS versions prior to 1.13.2 contain a UEFI BIOS Boot Services overwrite vulnerability. A local attacker with access to system memory may exploit this vulnerability by overwriting the EFI_BOOT_SERVICES structure to execute arbitrary code in System Management Mode (SMM).. EPSS estimates a 0.39% chance of exploitation in the next 30 days.

Description

Dell G7 17 7790 BIOS versions prior to 1.13.2 contain a UEFI BIOS Boot Services overwrite vulnerability. A local attacker with access to system memory may exploit this vulnerability by overwriting the EFI_BOOT_SERVICES structure to execute arbitrary code in System Management Mode (SMM).

Metrics

CVSS 3.1

6.8/10

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.39%

30.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Dell	G7 17 7790 Bios	< 1.13.2

References

https://www.dell.com/support/article/SLN322616Vendor Advisory
https://www.dell.com/support/article/SLN322616Vendor Advisory

Timeline

Published: Sep 2, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-5378?

How severe is CVE-2020-5378?

CVE-2020-5378 has a CVSS score of 6.8/10 (MEDIUM severity). The EPSS model estimates a 0.39% probability of exploitation in the next 30 days.

How do I fix CVE-2020-5378?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-5378?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST