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Known exploited vulnerability

CVE-2020-1054

highCVSS 3.1 7.0In CISA KEVEPSS 54%Published · Microsoft

The short answer

CVE-2020-1054 affects Microsoft Windows 10 Version 1507 and is rated high (CVSS 7.0). CISA added it to the Known Exploited Vulnerabilities catalog on 2021-11-03: attackers are using it, so patch it first. The vendor has linked a patch.

What it is

An elevation of privilege vulnerability exists in Windows when the Windows kernel-mode driver fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system. The update addresses this vulnerability by correcting how the Windows kernel-mode driver handles objects in memory.

Weakness: CWE-787.

Severity

7.0 high

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploited (CISA KEV)

Yes, since Nov 3, 2021

Federal due date May 3, 2022

EPSS, next 30 days

54%

Higher than 99% of scored CVEs

How it can be exploited

Attack vector
Local
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

Apply updates per vendor instructions.

Affected products

Windows 10 Version 1507, Windows 10 Version 1607, Windows 10 Version 1709, Windows 10 Version 1709 for 32-bit Systems, Windows 10 Version 1803, Windows 10 Version 1809, Windows 10 Version 1903 for 32-bit Systems, Windows 10 Version 1903 for ARM64-based Systems, Windows 10 Version 1903 for x64-based Systems, Windows 10 Version 1909, Windows 7, Windows 7 Service Pack 1. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2020-1054 being exploited?

Yes. CISA added CVE-2020-1054 to its Known Exploited Vulnerabilities catalog on 2021-11-03, with a federal remediation due date of 2022-05-03.

How do I fix CVE-2020-1054?

CISA's required action: Apply updates per vendor instructions.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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