CVE-2023-26300

Local privilege escalation via BIOS password unlock

Published Oct 18, 2023 · Updated Aug 2, 2024

BIOS password bypass in certain HP PC products allows local users without prior privileges to obtain elevated control through the system BIOS. HP identifies the affected component as the system BIOS and the issue as BIOS password unlock, but has not published the faulty operation or input that defeats password enforcement. Local access is required, and the resulting privilege escalation crosses the BIOS password boundary; HP has not described the precise elevated actions available.

CVSS severity8.0
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

BIOS password bypass in certain HP PC products allows local users without prior privileges to obtain elevated control through the system BIOS. HP identifies the affected component as the system BIOS and the issue as BIOS password unlock, but has not published the faulty operation or input that defeats password enforcement. Local access is required, and the resulting privilege escalation crosses the BIOS password boundary; HP has not described the precise elevated actions available.

The record

CVE
CVE-2023-26300
Published
Oct 18, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
Unavailable
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 18, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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

8.0HP Inc.CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

No sourced classifications are available.

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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