CVE-2020-5363

Privileged platform access via unchecked BIOS password change

Published Jun 10, 2020 · Updated Sep 16, 2024

Authentication bypass in select Dell client platforms allows local users to change the BIOS Admin password through the manageability interface. The interface accepts a new BIOS Admin password without verifying knowledge of the current password. Physical access or OS administrator privileges are required, after which the attacker gains privileged platform and hard-drive access.

CVSS severity8.6
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in select Dell client platforms allows local users to change the BIOS Admin password through the manageability interface. The interface accepts a new BIOS Admin password without verifying knowledge of the current password. Physical access or OS administrator privileges are required, after which the attacker gains privileged platform and hard-drive access.

The record

CVE
CVE-2020-5363
Published
Jun 10, 2020
Updated
Sep 16, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-158, T1556
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 10, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.6DellCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-158Improper Neutralization of Null Byte or NUL Character
T1556Modify Authentication Process

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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