Technical Severity
CRITICAL
CVSS v3.1 Metrics
9.8
/ 10
Minimal Risk
Critical
Vector Specification
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Exploitation Likelihood
EPSS Prediction
76.20
%
Predictive Probability
Percentile Rank
98.9
th
Documented as more likely to be exploited than 98.9% of known CVEs.
Detection Date
Oct 24, 2025
Remediation Due
Nov 14, 2025
CISA Catalog Active
Threat Analysis
Microsoft Windows Server Update Service (WSUS) contains a deserialization of untrusted data vulnerability that allows for remote code execution.
Remediation Directive
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.