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CVE-2021-22900

Published: May 27, 2021Updated: Dec 18, 2025 Sources: CVE List NVDCWE-94
NVD MITRE
7.2CVSSHIGH
EPSS Score
14.1%
Top 3.9%
CISA KEV
Active Exploitation
Since Nov 3, 2021
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-94CWE-669

Affected Products

Pulse Secure Securen/a
connect secureivantiSecurity Products
pulse connect securepulsesecure
On-premNetwork Device
Networking Infrastructure / vpn-gateway
ivanticommercialUSSecurity Productsaka ivanti connect secure, avalanche
pulsesecurecommercialUSNetworking Infrastructureaka pulsedsecure, pulse secure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:Nov 3, 2021
Remediation due:May 3, 2022

Required action: Apply updates per vendor instructions.

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/?kA23Z000000boUWSAY
kb.pulsesecure.net
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22900
cisa.gov

Timeline

Published
May 27, 2021
Added to CISA KEV
Nov 3, 2021
Last Updated
Dec 18, 2025

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