ACTIVELY EXPLOITED
CVE-2021-22941: Citrix ShareFile Improper Access Control Vulnerability
| Vendor | Citrix |
|---|---|
| Product | ShareFile |
| Actively exploited | Yes |
| Added to CISA KEV | 25 Mar 2022 |
| CISA federal deadline | 15 Apr 2022 |
| Ransomware use | Known |
| Weakness (CWE) | CWE-284 |
Required action (CISA's text)
Apply updates per vendor instructions.
Description (NVD)
Improper Access Control in Citrix ShareFile storage zones controller may allow an unauthenticated attacker to remotely compromise the storage zones controller.
SOURCES
Other Citrix flaws
- CVE-2026-88779: Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
- CVE-2026-88772: Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
- CVE-2026-88771: Citrix NetScaler Improper Input Validation Vulnerability
- CVE-2026-19490: Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel Vulnerability
- CVE-2026-8452: Citrix NetScaler ADC and NetScaler Gateway Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.