Junglewise Threat Intelligence

CVE-2022-41125: Microsoft Windows CNG Key Isolation Service Privilege Escalation Vulnerability

CVE-2022-41125 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2022-11-08

Technologies: Microsoft Windows, Microsoft Windows Server 2016, Microsoft Windows 10, Microsoft Windows Server 2019, Microsoft Windows Server 2022, Microsoft Windows 7, Microsoft Windows 11, Microsoft Windows Server 2012, Microsoft Windows 8.1. Vendors: Microsoft.

Executive brief

The Microsoft Windows Cryptographic Next Generation (CNG) Key Isolation Service contains an out-of-bounds write vulnerability (CWE-787). A local attacker can exploit this flaw to escalate privileges to SYSTEM-level.

Affected products

  • Microsoft Windows 10 up to (excluding) 10.0.10240.19567 (1507), 10.0.14393.5501 (1607), 10.0.17763.3650 (1809), 10.0.19042.2251 (20H2), 10.0.19043.2251 (21H1), 10.0.19044.2251 (21H2), 10.0.19045.2251 (22H2)
  • Microsoft Windows 11 up to (excluding) 10.0.22000.1219 (21H2), 10.0.22621.819 (22H2)
  • Microsoft Windows Server 2012 R2 and base versions
  • Microsoft Windows Server 2016 up to (excluding) 10.0.14393.5501
  • Microsoft Windows Server 2019 up to (excluding) 10.0.17763.3650
  • Microsoft Windows Server 2022 up to (excluding) 10.0.20348.1249
  • Microsoft Windows 8.1 All versions
  • Microsoft Windows 7 SP1

Timeline

  • 2022-11-08: disclosed: Vulnerability published by Microsoft
  • 2022-11-08: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2022-11-08: patched: Microsoft released security updates to address the issue
  • 2022-11-08: exploited: Reported as exploited in the wild at time of publication

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