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CVE-2022-21971

Microsoft Windows Runtime Remote Code Execution

7.8 HIGHActively exploited (CISA KEV)EPSS 53.9%
  1. Published9 Feb 2022
  2. Added to CISA KEV18 Aug 2022
  3. Remediation due8 Sept 2022
Actively exploited (CISA KEV)

Microsoft Windows Runtime contains an unspecified vulnerability that allows for remote code execution.

Added to KEV: 18 Aug 2022Federal remediation due: 8 Sept 2022

Description

Windows Runtime Remote Code Execution Vulnerability

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Microsoft Windows 10 1809< 10.0.17763.2565
Microsoft Windows 10 1909< 10.0.18363.2094
Microsoft Windows 10 20h2< 10.0.19042.1526
Microsoft Windows 10 21h1< 10.0.19043.1526
Microsoft Windows 10 21h2< 10.0.19044.1526
Microsoft Windows 11 21h2< 10.0.22000.493
Microsoft Windows Server 2019< 10.0.17763.2565
Microsoft Windows Server 2022< 10.0.20348.524
Microsoft Windows Server 20h2< 10.0.19042.1526

Remediation

Fixed in
Microsoft Windows 10 1809≥ 10.0.17763.2565
Microsoft Windows 10 1909≥ 10.0.18363.2094
Microsoft Windows 10 20h2≥ 10.0.19042.1526
Microsoft Windows 10 21h1≥ 10.0.19043.1526
Microsoft Windows 10 21h2≥ 10.0.19044.1526
Microsoft Windows 11 21h2≥ 10.0.22000.493
Microsoft Windows Server 2019≥ 10.0.17763.2565
Microsoft Windows Server 2022≥ 10.0.20348.524
Microsoft Windows Server 20h2≥ 10.0.19042.1526

References

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Frequently asked

Is CVE-2022-21971 being actively exploited?

Yes. CVE-2022-21971 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 18 Aug 2022.

How severe is CVE-2022-21971?

CVE-2022-21971 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 53.9% probability of exploitation.

Which products are affected by CVE-2022-21971?

Affected products include Microsoft Windows 10 1809, Microsoft Windows 10 1909, Microsoft Windows 10 20h2, Microsoft Windows 10 21h1, Microsoft Windows 10 21h2, and 4 more.

How do I fix CVE-2022-21971?

Upgrade affected software to a fixed version, for example Microsoft Windows 10 1809 10.0.17763.2565, Microsoft Windows 10 1909 10.0.18363.2094, Microsoft Windows 10 20h2 10.0.19042.1526 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2022-21971 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.