CVE-2021-3463

Local system crash via null pointer dereference

Published Apr 13, 2021 · Updated Aug 3, 2024

Null pointer dereference in Lenovo Power Management Driver before 1.67.17.54 allows local users to crash Windows 10 systems. Lenovo has not published the affected driver routine, the triggering input, or the unchecked operation that produces the null dereference. Exploitation requires high privileges and user interaction, and the reported consequence is a blue-screen crash without confidentiality or integrity impact.

CVSS severity4.2
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Null pointer dereference in Lenovo Power Management Driver before 1.67.17.54 allows local users to crash Windows 10 systems. Lenovo has not published the affected driver routine, the triggering input, or the unchecked operation that produces the null dereference. Exploitation requires high privileges and user interaction, and the reported consequence is a blue-screen crash without confidentiality or integrity impact.

The record

CVE
CVE-2021-3463
Published
Apr 13, 2021
Updated
Aug 3, 2024
Vendor
Lenovo
Product
Lenovo Power Management Driver
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Apr 13, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=unspecified <1.67.17.54

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Lenovo · Lenovo Power Management Driverversion=unspecified <1.67.17.54

Published CVSS scores

4.2LenovoCVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H
4.9NIST NVDAV:L/AC:L/Au:N/C:N/I:N/A:C
4.4NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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