CVE-2020-8357

Service interruption via misplaced configuration files

Published Mar 9, 2021 · Updated Aug 4, 2024

Incorrect default permissions in Lenovo PC Manager before 3.0.200.2042 allow local users to cause a service interruption. The application permits configuration files to be written to non-standard locations, but Lenovo has not disclosed the responsible file-handling locus or exact permission error. Exploitation requires low-privilege local access and can deny availability; no confidentiality or integrity impact is reported.

CVSS severity5.5
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

Incorrect default permissions in Lenovo PC Manager before 3.0.200.2042 allow local users to cause a service interruption. The application permits configuration files to be written to non-standard locations, but Lenovo has not disclosed the responsible file-handling locus or exact permission error. Exploitation requires low-privilege local access and can deny availability; no confidentiality or integrity impact is reported.

The record

CVE
CVE-2020-8357
Published
Mar 9, 2021
Updated
Aug 4, 2024
Vendor
Lenovo
Product
Lenovo PC Manager
Classifications
CWE-276
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 9, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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 <3.0.200.2042

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Lenovo · Lenovo PC Managerversion=unspecified <3.0.200.2042

Published CVSS scores

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

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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