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UK Cyber Defence
VulnerabilityAnalyzed

CVE-2022-41073

Microsoft Windows Print Spooler Privilege Escalation Vulnerability

KEVHIGH 7.8EPSS 2.36%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 9 December 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

Windows Print Spooler Elevation of Privilege Vulnerability

CVSS 3.1
7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
2.36% probability · 84th percentile
Public exploits
None in Exploit-DB
CISA KEV
Listed 8 November 2022 · due 9 December 2022 · used in ransomware campaigns
Weakness
CWE-787
Affected
microsoft/windows 10 1507 · microsoft/windows 10 1607 · microsoft/windows 10 1809 · microsoft/windows 10 20h2 · microsoft/windows 10 21h1 · microsoft/windows 10 21h2 · microsoft/windows 10 22h2 · microsoft/windows 11 21h2 · microsoft/windows 11 22h2 · microsoft/windows 7 · microsoft/windows 8.1 · microsoft/windows server 2008 · microsoft/windows server 2012 · microsoft/windows server 2016 · microsoft/windows server 2019 · microsoft/windows server 2022
Source
secure@microsoft.com
EPSS trend
0%3%5%26 October 2026: 2.36%26 October 202626 October 2026

EPSS 2.4% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

CISA notes

Apply updates per vendor instructions. https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-41073; https://nvd.nist.gov/vuln/detail/CVE-2022-41073

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.