CVE-2021-3451

Local denial of service via misplaced configuration files

Published Apr 27, 2021 · Updated Aug 3, 2024

Incorrect default permissions in Lenovo PC Manager before 3.0.400.3252 allow local users to cause denial of service through configuration-file placement. Lenovo has not published the responsible file operation or why placement in non-standard locations interrupts service. Low-privileged local access is required; the reported consequence is availability loss without disclosed data exposure or modification.

CVSS severity5.5
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect default permissions in Lenovo PC Manager before 3.0.400.3252 allow local users to cause denial of service through configuration-file placement. Lenovo has not published the responsible file operation or why placement in non-standard locations interrupts service. Low-privileged local access is required; the reported consequence is availability loss without disclosed data exposure or modification.

The record

CVE
CVE-2021-3451
Published
Apr 27, 2021
Updated
Aug 3, 2024
Vendor
Lenovo
Product
Lenovo PC Manager
Classifications
CWE-276, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 27, 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 <3.0.400.3252

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Lenovo · Lenovo PC Managerversion=unspecified <3.0.400.3252

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5Lenovo Group Ltd.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2.1NIST NVDAV:L/AC:L/Au:N/C:N/I:N/A:P

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
T1499Endpoint Denial of Service

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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