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CVE-2022-21999

Microsoft Windows Print Spooler Privilege Escalation

7.8 HIGHActively exploited (CISA KEV)Used in ransomwareEPSS 41.0%
  1. Published9 Feb 2022
  2. Added to CISA KEV25 Mar 2022
  3. Remediation due15 Apr 2022
Actively exploited (CISA KEV)

Microsoft Windows Print Spooler contains an unspecified vulnerability which can allow for privilege escalation.

Added to KEV: 25 Mar 2022Federal remediation due: 15 Apr 2022Used in ransomware

Description

Windows Print Spooler Elevation of Privilege Vulnerability

CVSS 3.1 breakdown

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

Affected products

Microsoft Windows 10 1507< 10.0.10240.19204
Microsoft Windows 10 1607< 10.0.14393.4946
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 7all versions
Microsoft Windows 8.1all versions
Microsoft Windows Rt 8.1all versions
Microsoft Windows Server 2008r2
Microsoft Windows Server 2012r2
Microsoft Windows Server 2016< 10.0.14393.4946
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 1507≥ 10.0.10240.19204
Microsoft Windows 10 1607≥ 10.0.14393.4946
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 2016≥ 10.0.14393.4946
Microsoft Windows Server 2019≥ 10.0.17763.2565

References

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Frequently asked

Is CVE-2022-21999 being actively exploited?

Yes. CVE-2022-21999 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 25 Mar 2022. It has been used in ransomware campaigns.

How severe is CVE-2022-21999?

CVE-2022-21999 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 41.0% probability of exploitation.

Which products are affected by CVE-2022-21999?

Affected products include Microsoft Windows 10 1507, Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 1909, Microsoft Windows 10 20h2, and 12 more.

How do I fix CVE-2022-21999?

Upgrade affected software to a fixed version, for example Microsoft Windows 10 1507 10.0.10240.19204, Microsoft Windows 10 1607 10.0.14393.4946, Microsoft Windows 10 1809 10.0.17763.2565 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2022-21999 against the real software inventory on every managed device, as each hourly inventory arrives. 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, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. 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.