CVE intelligence and bounded remediation

CVE-2020-5324 — Dell Client Consumer and Commercial Platforms contain an Arbitrary File Overwrite Vulnerability

High CVSS 7.1

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.

Severity
High
CVSS
7.1 (3.1)
Published
2020-02-21
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-427, CWE-59

Affected products

  • dell / g3_3579_firmware
  • dell / g3_3779_firmware
  • dell / g3_15_3590_firmware
  • dell / g5_15_5590_firmware
  • dell / g5_5090_firmware
  • dell / g5_5587_firmware

Showing 6 representative product identities from 113 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Path traversal, unsafe upload, and file handling

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Check exposure

  • Trace untrusted filenames, archive entries, URLs, and path segments into read, write, include, extraction, and upload operations.
  • Identify filesystem roots, mount permissions, symbolic-link behavior, archive handling, and whether uploaded content is web-accessible or executable.
  • Review canonicalization and containment checks across supported operating systems and storage backends.

Remediate safely

  • Generate server-side storage identifiers and resolve paths beneath a fixed root using filesystem-aware containment checks.
  • Reject absolute, parent-relative, alternate-separator, device, link, and archive entries that escape the intended root.
  • Store uploads outside executable or served paths, validate type and size, and use private atomic temporary files.

Authoritative sources

Complete CVE record and remediation plan

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