CVE-2019-6190

Service interruption via PCR clearing on S3 resume

Published Feb 14, 2020 · Updated Sep 16, 2024

Improper initialization in Lenovo BIOS for affected desktops and workstations allows local users to interrupt service after S3 resume. The BIOS resume path intermittently clears TPM platform configuration registers instead of preserving their state when Intel TXT is enabled. Exploitation requires local low-privileged access, user interaction, S3 sleep, and Intel TXT; the reported consequence is availability loss only.

CVSS severity5.0
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper initialization in Lenovo BIOS for affected desktops and workstations allows local users to interrupt service after S3 resume. The BIOS resume path intermittently clears TPM platform configuration registers instead of preserving their state when Intel TXT is enabled. Exploitation requires local low-privileged access, user interaction, S3 sleep, and Intel TXT; the reported consequence is availability loss only.

The record

CVE
CVE-2019-6190
Published
Feb 14, 2020
Updated
Sep 16, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-665, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 14, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NIST NVDCVSS: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
5.0Lenovo Group Ltd.CVSS:3.1/AV:L/AC:L/PR:L/UI:R/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-665Improper Initialization
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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