---
id: CVE-2021-22893
title: >-
  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
  unauthenticat…
summary: >-
  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
  unauthenticat…
severity: critical
cvss: 10
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-287
  - CWE-416
vendor: ivanti
product: connect_secure
affected:
  - connect_secure = 9.0
  - connect_secure = 9.1
published: '2021-04-23'
updated: '2026-08-12'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2021-22893'
references:
  - url: 'https://blog.pulsesecure.net/pulse-connect-secure-security-update/'
    label: support@hackerone.com
  - url: 'https://kb.cert.org/vuls/id/213092'
    label: support@hackerone.com
  - url: 'https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/'
    label: support@hackerone.com
  - url: >-
      https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html
    label: support@hackerone.com
  - url: 'https://blog.pulsesecure.net/pulse-connect-secure-security-update/'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://kb.cert.org/vuls/id/213092'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.kb.cert.org/vuls/id/213092'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22893
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - kev
  - in-the-wild
  - exploit-available
epss: 0.47172
epssPercentile: 0.98795
kev: true
kevDateAdded: '2021-11-03'
kevDueDate: '2022-05-03'
kevRansomware: true
exploited: true
ingestedAt: '2026-08-12T19:54:25.983Z'
exploits:
  github: 3
  githubRepos:
    - 'https://github.com/ZephrFish/CVE-2021-22893_HoneyPoC2'
    - 'https://github.com/MRLEE123456/CVE-2021-22893'
    - 'https://github.com/orangmuda/CVE-2021-22893'
  checkedAt: '2026-09-25T08:20:38.307Z'
exploitAvailable: true
---

## Overview

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.

## Affected

- `connect_secure = 9.0`
- `connect_secure = 9.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.