Citrix ShareFile Improper Access Control Vulnerability

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

Technical Severity

CVSS v3.1 Metrics

CRITICAL

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

Exploitation Likelihood

EPSS Prediction

87.80 %

Predictive Probability

Percentile Rank

99.5 th

Documented as more likely to be exploited than 99.5% of known CVEs.

Detection Date

Mar 25, 2022

Remediation Due

Apr 15, 2022

CISA Catalog Active

Threat Analysis

Improper Access Control in Citrix ShareFile storage zones controller may allow an unauthenticated attacker to remotely compromise the storage zones controller.

Remediation Directive

Apply updates per vendor instructions.

External Intelligence

NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2021-22941