CVE-2024-23593

Privilege escalation via boot manager modification

Published Apr 15, 2024 · Updated Aug 1, 2024

Privilege escalation in Lenovo Windows 7 and 8 PC Preloads allows local users with high privileges to modify the boot manager. The CNA maps the bootloader flaw to improper validation of a specified quantity, but Lenovo has not disclosed the affected input or code path. Local access and existing high privileges are required; successful exploitation changes boot control and raises privileges.

CVSS severity6.7
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in Lenovo Windows 7 and 8 PC Preloads allows local users with high privileges to modify the boot manager. The CNA maps the bootloader flaw to improper validation of a specified quantity, but Lenovo has not disclosed the affected input or code path. Local access and existing high privileges are required; successful exploitation changes boot control and raises privileges.

The record

CVE
CVE-2024-23593
Published
Apr 15, 2024
Updated
Aug 1, 2024
Vendor
Lenovo
Product
Windows 7 and 8 PC Preloads
Classifications
CWE-1284, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Apr 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=various

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Lenovo · Windows 7 and 8 PC Preloadsversion=various

Published CVSS scores

6.7LenovoCVSS:3.1/AV:L/AC:L/PR:H/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.

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1284Improper Validation of Specified Quantity in Input
T1068Exploitation for Privilege Escalation

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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