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Known exploited vulnerability

CVE-2021-22941

criticalCVSS 3.1 9.8In CISA KEVRansomwareEPSS 54%Published · n/a

The short answer

CVE-2021-22941 affects n/a Citrix ShareFile storage zones controller and is rated critical (CVSS 9.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-03-25: attackers are using it, so patch it first.

What it is

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.

Weakness: CWE-284.

Severity

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploited (CISA KEV)

Yes, since Mar 25, 2022

Federal due date Apr 15, 2022

EPSS, next 30 days

54%

Higher than 99% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

Apply updates per vendor instructions.

Affected products

Citrix ShareFile storage zones controller. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2021-22941 being exploited?

Yes. CISA added CVE-2021-22941 to its Known Exploited Vulnerabilities catalog on 2022-03-25, with a federal remediation due date of 2022-04-15. CISA lists it as used in ransomware campaigns.

How do I fix CVE-2021-22941?

CISA's required action: Apply updates per vendor instructions.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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