cbcvebase.
CVE-2022-41125
published 2022-11-09

CVE-2022-41125: Windows CNG Key Isolation Service Elevation of Privilege Vulnerability

PriorityP180high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
KEVITW
CISA Known Exploited Vulnerabilitydue 2022-12-09
Exploited in the wild
EPSS
3.02%
85.9th percentile
Windows CNG Key Isolation Service Elevation of Privilege Vulnerability

Affected

45 ranges· showing 25
VendorProductVersion rangeFixed in
microsoftwindows_10_1507< 10.0.10240.1956710.0.10240.19567
microsoftwindows_10_1607< 10.0.14393.550110.0.14393.5501
microsoftwindows_10_1809< 10.0.17763.365010.0.17763.3650
microsoftwindows_10_20h2< 10.0.19042.225110.0.19042.2251
microsoftwindows_10_21h1< 10.0.19043.225110.0.19043.2251
microsoftwindows_10_21h2< 10.0.19044.225110.0.19044.2251
microsoftwindows_10_22h2< 10.0.19045.225110.0.19045.2251
microsoftwindows_10_version_1507>= 10.0.10240.0 < 10.0.10240.1956710.0.10240.19567
microsoftwindows_10_version_1607>= 10.0.14393.0 < 10.0.14393.550110.0.14393.5501
microsoftwindows_10_version_1809>= 10.0.0 < 10.0.17763.365010.0.17763.3650
microsoftwindows_10_version_1809>= 10.0.17763.0 < 10.0.17763.365010.0.17763.3650
microsoftwindows_10_version_20h2>= 10.0.0 < 10.0.19042.225110.0.19042.2251
microsoftwindows_10_version_21h1>= 10.0.0 < 10.0.19043.225110.0.19043.2251
microsoftwindows_10_version_21h2>= 10.0.19043.0 < 10.0.19044.225110.0.19044.2251
microsoftwindows_10_version_22h2>= 10.0.19045.0 < 10.0.19045.225110.0.19045.2251
microsoftwindows_11_21h2< 10.0.22000.121910.0.22000.1219
microsoftwindows_11_22h2< 10.0.22621.81910.0.22621.819
microsoftwindows_11_version_21h2>= 10.0.0 < 10.0.22000.121910.0.22000.1219
microsoftwindows_11_version_22h2>= 10.0.22621.0 < 10.0.22621.81910.0.22621.819
microsoftwindows_8.1>= 6.3.0 < 6.3.9600.206716.3.9600.20671
microsoftwindows_server_2012
microsoftwindows_server_2012>= 6.2.9200.0 < 6.2.9200.239686.2.9200.23968
microsoftwindows_server_2012_r2>= 6.3.9600.0 < 6.3.9600.206716.3.9600.20671
microsoftwindows_server_2016< 10.0.14393.550110.0.14393.5501
microsoftwindows_server_2016>= 10.0.14393.0 < 10.0.14393.550110.0.14393.5501

Detection & IOCsextracted from sources · hover to see the quote

  • Target service for exploitation is the Windows CNG Key Isolation Service; monitor for anomalous process activity or privilege escalation originating from this service.
  • Successful exploitation results in SYSTEM-level privileges; alert on unexpected SYSTEM token acquisition by non-SYSTEM processes interacting with the CNG Key Isolation Service.
  • This vulnerability has been confirmed exploited in the wild; treat any unpatched Windows systems running the CNG Key Isolation Service as high-priority targets for detection and patching.
  • Microsoft Windows Cryptographic Next Generation (CNG) Key Isolation Service is the affected component; scope detection to processes communicating with KeyIso (the CNG Key Isolation Service) for unexpected privilege changes.
  • ·The vulnerability mechanism is unspecified in public disclosures; no technical details, PoC, or exploit code are publicly available as of the advisory date, limiting signature-based detection.
  • ·Exploitation has been detected in the wild but was not publicly disclosed prior to the patch; defenders should prioritize patch application (KB5019966, KB5019959, etc.) as behavioral detection coverage may be limited.

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv6.5MEDIUM
vulncheck7.8HIGH
cisa7.8HIGH
vendor_msrc7.8HIGH
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