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

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.

Technologies: Microsoft Windows. Vendors: Microsoft.

Quick answers

Is CVE-2022-41125 exploited in the wild?
Yes. CVE-2022-41125 is known to be exploited in the wild, first recorded on 8 November 2022. Treat it as urgent.
How severe is CVE-2022-41125?
Critical severity, with a CVSS score of 7.8, published 8 November 2022.
Which products and versions are affected?
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; and 4 more.
Is there a fix for CVE-2022-41125?
A patch was published on 2022-11-08: Microsoft released security updates to address the issue Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2022-41125 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2022-41125?
Check whether you run Microsoft Windows. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

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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