Windows Kerberos
CVE-2022-37966 — Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability
Executive Summary
None
Overview
8.1
CVSS HIGH
Critical
MS Severity
Not Exploited
MS Exploit Status
More Likely
MS Exploit Likelihood
CVSS Vector
ATTACK VECTOR
Network
ATTACK COMPLEXITY
High
PRIVILEGES REQUIRED
None
USER INTERACTION
None
SCOPE
Unchanged
Temporal Score: 7.1
EPSS Score
0.02772
probability of exploitation in the next 30 days
0.84422 percentile - updated 2026-06-20
View on FIRST.org
Affected Products
16 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows Server 2008 for 32-bit Systems Service Pack 2 | — |
Critical | Elevation of Privilege | Unknown |
| Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | — |
Critical | Elevation of Privilege | Unknown |
| Windows Server 2008 for x64-based Systems Service Pack 2 | — |
Critical | Elevation of Privilege | Unknown |
| Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | — |
Critical | Elevation of Privilege | Unknown |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | — |
Critical | Elevation of Privilege | Unknown |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | — |
Critical | Elevation of Privilege | Unknown |
| Windows Server 2012 | — |
Critical | Elevation of Privilege | Unknown |
| Windows Server 2012 (Server Core installation) | — |
Critical | Elevation of Privilege | Unknown |
| Windows Server 2012 R2 | — |
Critical | Elevation of Privilege | Unknown |
| Windows Server 2012 R2 (Server Core installation) | — |
Critical | Elevation of Privilege | Unknown |
| Windows Server 2016 | — |
Critical | Elevation of Privilege | Unknown |
| Windows Server 2016 (Server Core installation) | — |
Critical | Elevation of Privilege | Unknown |
| Windows Server 2019 | — |
Critical | Elevation of Privilege | Unknown |
| Windows Server 2019 (Server Core installation) | — |
Critical | Elevation of Privilege | Unknown |
| Windows Server 2022 | — |
Critical | Elevation of Privilege | Unknown |
| Windows Server 2022 (Server Core installation) | — |
Critical | Elevation of Privilege | Unknown |
Patches
1 patch
| Article | Type | Restart |
|---|---|---|
— |
Unknown |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
Microsoft has not published researcher acknowledgments for this CVE, or they are not yet reflected in our data source. Check the MSRC advisory directly for the most current credit information.
References
On This Page