How severe is CVE-2021-22900?

CVE-2021-22900 has a CVSS 3.1 base score of 7.2 (HIGH). EPSS estimates a 14.1% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2021-22900: Ivanti Pulse Connect Secure Unrestricted File Upload

CISA Known Exploited Vulnerabilities

Ivanti Pulse Connect Secure Unrestricted File Upload Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2021-11-03

Remediation due

2022-05-03

Required action
Apply updates per vendor instructions.

CISA notes
Reference CISA's ED 21-03 (https://www.cisa.gov/news-events/directives/ed-21-03-mitigate-pulse-connect-secure-product-vulnerabilities) for further guidance and requirements. Note: The due date for addressing this vulnerability aligns with the requirements outlined in ED 21-03. https://nvd.nist.gov/vuln/detail/CVE-2021-22900

Description

A vulnerability allowed multiple unrestricted uploads in Pulse Connect Secure before 9.1R11.4 that could lead to an authenticated administrator to perform a file write via a maliciously crafted archive upload in the administrator web interface.

Severity

CVSS 3.1 · CISA7.2 HIGH

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

SSVC · CISA-ADP

Exploitationactive

Automatableno

Technical impacttotal

Affected Products

Vendor	Product	Affected versions
-	Pulse Secure Secure	Fixed in 9.1R11.4

References

1 Links

Other references

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/?kA23Z000000boUWSAY

Record Details

Published

2021-05-27

Last updated

2025-10-21

Assigner (CNA)

hackerone

Credited to

Related Tool Categories

Tool categories that test for or protect against this vulnerability class.

CWE-94 · Code Injection

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CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.