CVE-2021-22893

Published: Apr 23, 2021Updated: Aug 12, 2026 Sources: CVE List NVD BDUCWE-287

10.0CRITICAL

NVD MITRE

Description

Pulse Connect Secure 9.0R3/9.1R1 and higher is vulnerable to an authentication bypass vulnerability exposed by the Windows File Share Browser and Pulse Secure Collaboration features of Pulse Connect Secure that can allow an unauthenticated user to perform remote arbitrary code execution on the Pulse Connect Secure gateway. This vulnerability has been exploited in the wild.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:CScope

Changed

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-287 CWE-416

Affected Products

Pulsesecure

commercial·USaka pulsedsecure, pulse secure

Pulse Connect SecureOn-premNetwork Device

Networking Infrastructure / vpn-gateway

ivanti

commercial·USaka ivanti connect secure, avalanche

connect secure

Security Products

and 1 more affected products View all →

Exploitability

CISA Known Exploited Vulnerability

Added to KEV:Nov 3, 2021

Remediation due:May 3, 2022

Ransomware:Known ransomware use

Required action: Apply updates per vendor instructions.

Official Patch Available

Is your org exposed to CVE-2021-22893?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

3 techniques

Initial Access

Privilege Escalation

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References

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

kb.pulsesecure.net

https://blog.pulsesecure.net/pulse-connect-secure-security-update/

blog.pulsesecure.net

https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html

fireeye.com

and 6 more references View all →

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