What’s Vulnerable › Vulnerabilities

CVE-2020-5357

• Severity: medium (CVSS 6.0 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: 2020-05-28 · updated 2026-06-17
• Weakness: CWE-427

Description

Dell Dock Firmware Update Utilities for Dell Client Consumer and Commercial docking stations contain an Arbitrary File Overwrite vulnerability. The vulnerability is limited to the Dell Dock Firmware Update Utilities 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 Dock Wd15 Firmware: before 1.0.8 — fixed in 1.0.8
• Dell Dock Wd19 Firmware: before 1.0.14 — fixed in 1.0.14
• Dell Precision Dual Usb-C Thunderbolt Dock - Tb18Dc Firmware: before 1.0.10 — fixed in 1.0.10
• Dell Thunderbolt Dock Tb16 Firmware: before 1.0.4 — fixed in 1.0.4

How to fix

Upgrade to a fixed version: Dell Dock Wd15 Firmware 1.0.8; Dell Dock Wd19 Firmware 1.0.14; Dell Precision Dual Usb-C Thunderbolt Dock - Tb18Dc Firmware 1.0.10; Dell Thunderbolt Dock Tb16 Firmware 1.0.4. Check the vendor advisory for mitigations.

References

• https://www.dell.com/support/article/SLN321564
• https://www.dell.com/support/article/SLN321564

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