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HIGH SEVERITY Ransomware Linked
CVE-2019-1064 Microsoft · Windows

Microsoft Windows AppX Deployment Service (AppXSVC) Privilege Escalation Vulnerability

Critical Threat Advisory: This vulnerability is documented in active Ransomware campaigns. Immediate remediation required.

Technical Severity

CVSS v3.1 Metrics

HIGH
7.8 / 10
Minimal Risk Critical
Vector Specification
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Exploitation Likelihood

EPSS Prediction

11.34 %
Predictive Probability
Percentile Rank
93.4 th

Documented as more likely to be exploited than 93.4% of known CVEs.

Detection Date

Mar 15, 2022

Remediation Due

Apr 05, 2022

CISA Catalog Active

Threat Analysis

A privilege escalation vulnerability exists when Windows AppXSVC improperly handles hard links. An attacker who successfully exploited this vulnerability could run processes in an elevated context.

Remediation Directive

Apply updates per vendor instructions.

External Intelligence