Windows Kerberos
CVE-2025-47978 — Windows Kerberos Denial of Service Vulnerability
Executive Summary
Out-of-bounds read in Windows Kerberos allows an authorized attacker to deny service over a network.
Overview
6.5
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
More Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
None
INTEGRITY
None
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 5.7
EPSS Score
0.01905
probability of exploitation in the next 30 days
0.77037 percentile - updated 2026-06-21
View on FIRST.org
Affected Products
5 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows Server 2022 | 5062572 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server 2022 (Server Core installation) | 5062572 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server 2022, 23H2 Edition (Server Core installation) | 5062570 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server 2025 | 5062553 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server 2025 (Server Core installation) | 5062553 (Security Update) |
Important | Denial of Service | Yes |
Patches
3 patches
| Article | Type | Restart |
|---|---|---|
5062572 |
Security Update | Yes |
5062570 |
Security Update | Yes |
5062553 |
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
References
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