Windows KDC Proxy Service (KPSSVC)
CVE-2025-33071 — Windows KDC Proxy Service (KPSSVC) Remote Code Execution Vulnerability
Executive Summary
Use after free in Windows KDC Proxy Service (KPSSVC) allows an unauthorized attacker to execute code over a network.
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
0.13548
probability of exploitation in the next 30 days
0.95969 percentile - updated 2026-06-20
View on FIRST.org
Affected Products
13 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows Server 2012 | 5061059 (Monthly Rollup) |
Critical | Remote Code Execution | Yes |
| Windows Server 2012 (Server Core installation) | 5061059 (Monthly Rollup) |
Critical | Remote Code Execution | Yes |
| Windows Server 2012 R2 | 5061018 (Monthly Rollup) |
Critical | Remote Code Execution | Yes |
| Windows Server 2012 R2 (Server Core installation) | 5061018 (Monthly Rollup) |
Critical | Remote Code Execution | Yes |
| Windows Server 2016 | 5061010 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2016 (Server Core installation) | 5061010 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2019 | 5060531 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2019 (Server Core installation) | 5060531 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2022 | 5060526 (Security Update) 5060525 (SecurityHotpatchUpdate) |
Critical | Remote Code Execution | Yes |
| Windows Server 2022 (Server Core installation) | 5060526 (Security Update) 5060525 (SecurityHotpatchUpdate) |
Critical | Remote Code Execution | Yes |
| Windows Server 2022, 23H2 Edition (Server Core installation) | 5060118 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2025 | 5060842 (Security Update) 5060841 (SecurityHotpatchUpdate) |
Critical | Remote Code Execution | Yes |
| Windows Server 2025 (Server Core installation) | 5060842 (Security Update) 5060841 (SecurityHotpatchUpdate) |
Critical | Remote Code Execution | Yes |
Patches
7 patches
| Article | Type | Restart |
|---|---|---|
5061059 |
Monthly Rollup | Yes |
5061018 |
Monthly Rollup | Yes |
5061010 |
Security Update | Yes |
5060531 |
Security Update | Yes |
5060526 (Security Update) 5060525 |
Security Update | Yes |
5060118 |
Security Update | Yes |
5060842 (Security Update) 5060841 |
Security Update | Yes |
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
k0shl with Kunlun Lab, ʌ!ɔ⊥ojv with Kunlun Lab
References
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