AUGUST 4, 2026
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Case File

CVE-2021-22941

CRITICAL · CVSS 9.8 EPSS 53.59% CISA KEV · Actively Exploited

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-09-23 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. It affects Citrix. It is listed in CISA's Known Exploited Vulnerabilities catalog, indicating confirmed active exploitation in the wild. Its EPSS score suggests a 53.6% probability of exploitation in the next 30 days. It may be remotely exploitable. Exploitation may require the attacker to be authenticated.

CISA KEV Details

Status: This CVE is listed in CISA's Known Exploited Vulnerabilities catalog.

Ransomware use: Known

Added to KEV: 2022-03-25

Required action: Apply updates per vendor instructions.

CVE
CVE-2021-22941
Severity
CRITICAL
CVSS
9.8
EPSS
53.59%
Citrix

Original NVD Description

Improper Access Control in Citrix ShareFile storage zones controller before 5.11.20 may allow an unauthenticated attacker to remotely compromise the storage zones controller.

Related CVEs

Other vulnerabilities affecting the same vendor(s)