Description

Use after free in Windows KDC Proxy Service (KPSSVC) allows an unauthorized attacker to execute code over a network.

Classification

CVE ID: CVE-2025-33071

CVSS Base Severity: HIGH

CVSS Base Score: 8.1

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Affected Products

Vendor: Microsoft

Product: Windows Server 2019, Windows Server 2019 (Server Core installation), Windows Server 2022, Windows Server 2025 (Server Core installation), Windows Server 2022, 23H2 Edition (Server Core installation), Windows Server 2025, Windows Server 2016, Windows Server 2016 (Server Core installation), Windows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation)

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.12% (probability of being exploited)

EPSS Percentile: 31.36% (scored less or equal to compared to others)

EPSS Date: 2025-06-17 (when was this score calculated)

Stakeholder-Specific Vulnerability Categorization (SSVC)

SSVC Exploitation: none

SSVC Technical Impact: total

SSVC Automatable: false

References

https://nvd.nist.gov/vuln/detail/CVE-2025-33071
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-33071

Timeline