CVE-2020-5324

Severity: medium (CVSS 4.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-02-21 · updated 2026-06-17
Weakness: CWE-427

Description

Dell Client Consumer and Commercial Platforms contain an Arbitrary File Overwrite Vulnerability. The vulnerability is limited to the Dell Firmware Update Utility during the time window while being executed by an administrator. During this time window, a locally authenticated low-privileged malicious user could exploit this vulnerability by tricking an administrator into overwriting arbitrary files via a symlink attack. The vulnerability does not affect the actual binary payload that the update utility delivers.

Affected products

Dell G3 15 3590 Firmware: before 1.9.2 — fixed in 1.9.2
Dell G3 3579 Firmware: before 1.11.0 — fixed in 1.11.0
Dell G3 3779 Firmware: before 1.11.0 — fixed in 1.11.0
Dell G5 15 5590 Firmware: before 1.11.1 — fixed in 1.11.1
Dell G5 5090 Firmware: before 1.1.2 — fixed in 1.1.2
Dell G5 5587 Firmware: before 1.12.2 — fixed in 1.12.2
Dell G7 15 7590 Firmware: before 1.11.1 — fixed in 1.11.1
Dell G7 17 7790 Firmware: before 1.11.1 — fixed in 1.11.1
Dell G7 7588 Firmware: before 1.12.2 — fixed in 1.12.2
Dell Inspiron 14 5490 Firmware: before 1.4.0 — fixed in 1.4.0
Dell Inspiron 3480 Firmware: before 1.7.0 — fixed in 1.7.0
Dell Inspiron 3481 Firmware: before 1.6.0 — fixed in 1.6.0
Dell Inspiron 3490 Firmware: before 1.5.0 — fixed in 1.5.0
Dell Inspiron 3493 Firmware: before 1.4.0 — fixed in 1.4.0
Dell Inspiron 3580 Firmware: before 1.7.0 — fixed in 1.7.0
Dell Inspiron 3581 Firmware: before 1.6.0 — fixed in 1.6.0
Dell Inspiron 3583 Firmware: before 1.7.0 — fixed in 1.7.0
Dell Inspiron 3584 Firmware: before 1.6.0 — fixed in 1.6.0
Dell Inspiron 3590 Firmware: before 1.5.0 — fixed in 1.5.0
Dell Inspiron 3593 Firmware: before 1.4.0 — fixed in 1.4.0
Dell Inspiron 3780 Firmware: before 1.7.0 — fixed in 1.7.0
Dell Inspiron 3781 Firmware: before 1.6.0 — fixed in 1.6.0
Dell Inspiron 3790 Firmware: before 1.5.0 — fixed in 1.5.0
Dell Inspiron 3793 Firmware: before 1.4.0 — fixed in 1.4.0
Dell Inspiron 5390 Firmware: before 1.7.1 — fixed in 1.7.1
Dell Inspiron 5391 Firmware: before 1.3.0 — fixed in 1.3.0
Dell Inspiron 5480 Firmware: before 2.6.1 — fixed in 2.6.1
Dell Inspiron 5481 Firmware: before 2.6.1 — fixed in 2.6.1
Dell Inspiron 5482 Firmware: through 2.6.1
Dell Inspiron 5491 Firmware: before 1.4.0 — fixed in 1.4.0

How to fix

Upgrade to a fixed version: Dell G3 15 3590 Firmware 1.9.2; Dell G3 3579 Firmware 1.11.0; Dell G3 3779 Firmware 1.11.0; Dell G5 15 5590 Firmware 1.11.1; Dell G5 5090 Firmware 1.1.2; Dell G5 5587 Firmware 1.12.2; Dell G7 15 7590 Firmware 1.11.1; Dell G7 17 7790 Firmware 1.11.1; Dell G7 7588 Firmware 1.12.2; Dell Inspiron 14 5490 Firmware 1.4.0; Dell Inspiron 3480 Firmware 1.7.0; Dell Inspiron 3481 Firmware 1.6.0. Check the vendor advisory for mitigations.

References

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