CVE-2021-22893
Detail
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.
Metrics
CVSS Version 4.0
CVSS Version 3.x
CVSS Version 2.0
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 3.x Severity and Vector Strings:
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS 2.0 Severity and Vector Strings:
Vector:
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
References to Advisories, Solutions, and Tools
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This CVE is in CISA's Known Exploited Vulnerabilities Catalog
Reference
CISA's BOD 22-01 and Known
Exploited Vulnerabilities Catalog for further guidance and requirements.
Vulnerability Name
Date Added
Due Date
Required Action
Ivanti Pulse Connect Secure Use-After-Free Vulnerability
11/03/2021
04/23/2021
Apply updates per vendor instructions.
Weakness Enumeration
CWE-ID
CWE Name
Source
CWE-416
Use After Free
NIST
CWE-287
Improper Authentication
HackerOne
Change History
43 change records found show changes
Modified Analysis by NIST 3/21/2025 3:26:19 PM
Action
Type
Old Value
New Value
Changed
Reference Type
CVE: https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/ Types: Vendor Advisory
CVE: https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/ Types: Broken Link, Vendor Advisory
Changed
Reference Type
HackerOne: https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/ Types: Vendor Advisory
HackerOne: https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/ Types: Broken Link, Vendor Advisory
Added
Reference Type
CVE: https://www.kb.cert.org/vuls/id/213092 Types: US Government Resource
CVE Modified by CISA-ADP 2/04/2025 3:15:40 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVE Modified by CVE 11/21/2024 12:50:51 AM
Action
Type
Old Value
New Value
Added
Reference
https://blog.pulsesecure.net/pulse-connect-secure-security-update/
Added
Reference
https://kb.cert.org/vuls/id/213092
Added
Reference
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/
Added
Reference
https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html
Added
Reference
https://www.kb.cert.org/vuls/id/213092
CVE Modified by HackerOne 5/14/2024 4:17:49 AM
Action
Type
Old Value
New Value
CPE Deprecation Remap by NIST 2/27/2024 4:04:17 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:r5:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.1:r5:*:*:*:*:*:*
CPE Deprecation Remap by NIST 2/27/2024 4:04:17 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:r6:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.1:r6:*:*:*:*:*:*
CPE Deprecation Remap by NIST 2/27/2024 4:04:17 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:r7:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.1:r7:*:*:*:*:*:*
CPE Deprecation Remap by NIST 2/27/2024 4:04:17 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:-:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.1:-:*:*:*:*:*:*
CPE Deprecation Remap by NIST 2/27/2024 4:04:17 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:r1:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.1:r1:*:*:*:*:*:*
CPE Deprecation Remap by NIST 2/27/2024 4:04:17 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:r2:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.1:r2:*:*:*:*:*:*
CPE Deprecation Remap by NIST 2/27/2024 4:04:17 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:r3:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.1:r3:*:*:*:*:*:*
CPE Deprecation Remap by NIST 2/27/2024 4:04:17 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:r4:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.1:r4:*:*:*:*:*:*
CPE Deprecation Remap by NIST 2/27/2024 4:04:17 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:r4.1:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.1:r4.1:*:*:*:*:*:*
CPE Deprecation Remap by NIST 2/27/2024 4:04:17 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:r4.2:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.1:r4.2:*:*:*:*:*:*
CPE Deprecation Remap by NIST 2/27/2024 4:04:17 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:r4.3:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.1:r4.3:*:*:*:*:*:*
CPE Deprecation Remap by NIST 2/27/2024 4:04:17 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:r8:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.1:r8:*:*:*:*:*:*
CPE Deprecation Remap by NIST 2/27/2024 4:04:17 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:r8.1:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.1:r8.1:*:*:*:*:*:*
CPE Deprecation Remap by NIST 2/27/2024 4:04:17 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:r8.2:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.1:r8.2:*:*:*:*:*:*
CPE Deprecation Remap by NIST 2/27/2024 4:04:17 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:r8.4:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.1:r8.4:*:*:*:*:*:*
CPE Deprecation Remap by NIST 2/27/2024 4:04:17 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:r9:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.1:r9:*:*:*:*:*:*
CPE Deprecation Remap by NIST 2/27/2024 4:04:17 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:r9.1:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.1:r9.1:*:*:*:*:*:*
CPE Deprecation Remap by NIST 2/27/2024 4:04:17 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:r9.2:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.1:r9.2:*:*:*:*:*:*
CPE Deprecation Remap by NIST 2/27/2024 4:04:17 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:r10.0:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.1:r10.0:*:*:*:*:*:*
CPE Deprecation Remap by NIST 2/27/2024 4:04:17 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:r10.2:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.1:r10.2:*:*:*:*:*:*
CPE Deprecation Remap by NIST 2/27/2024 4:04:17 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:r11.0:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.1:r11.0:*:*:*:*:*:*
CPE Deprecation Remap by NIST 2/27/2024 4:04:17 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:r11.1:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.1:r11.1:*:*:*:*:*:*
CPE Deprecation Remap by NIST 2/27/2024 4:04:17 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:r11.3:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.1:r11.3:*:*:*:*:*:*
CPE Deprecation Remap by NIST 1/13/2024 1:36:49 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r1:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.0:r1:*:*:*:*:*:*
CPE Deprecation Remap by NIST 1/13/2024 1:36:49 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r2:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.0:r2:*:*:*:*:*:*
CPE Deprecation Remap by NIST 1/13/2024 1:36:49 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r2.1:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.0:r2.1:*:*:*:*:*:*
CPE Deprecation Remap by NIST 1/13/2024 1:36:49 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r3:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.0:r3:*:*:*:*:*:*
CPE Deprecation Remap by NIST 1/13/2024 1:36:49 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r3.1:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.0:r3.1:*:*:*:*:*:*
CPE Deprecation Remap by NIST 1/13/2024 1:36:49 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r3.2:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.0:r3.2:*:*:*:*:*:*
CPE Deprecation Remap by NIST 1/13/2024 1:36:49 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r3.3:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.0:r3.3:*:*:*:*:*:*
CPE Deprecation Remap by NIST 1/13/2024 1:36:49 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:-:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.0:-:*:*:*:*:*:*
CPE Deprecation Remap by NIST 1/13/2024 1:36:49 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r3.5:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.0:r3.5:*:*:*:*:*:*
CPE Deprecation Remap by NIST 1/13/2024 1:36:49 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r4:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.0:r4:*:*:*:*:*:*
CPE Deprecation Remap by NIST 1/13/2024 1:36:49 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r4.1:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.0:r4.1:*:*:*:*:*:*
CPE Deprecation Remap by NIST 1/13/2024 1:36:49 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r5.0:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.0:r5.0:*:*:*:*:*:*
CPE Deprecation Remap by NIST 1/13/2024 1:36:49 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r6.0:*:*:*:*:*:*
OR
*cpe:2.3:a:ivanti:connect_secure:9.0:r6.0:*:*:*:*:*:*
Reanalysis by NIST 10/24/2022 1:17:23 PM
Action
Type
Old Value
New Value
Added
CWE
NIST CWE-416
Removed
CWE
NIST CWE-287
Reanalysis by NIST 4/28/2021 1:52:53 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
Record truncated, showing 500 of 574 characters.
View Entire Change Record
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:*:*:*:*:*:*:*:* versions up to (excluding) 9.0
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:-:*:*:*:*:*:*
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r1:*:*:*:*:*:*
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r2:*:*:*:*:*:*
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r2.1:*:*:*:*:*:*
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r3:*:*:*:*:*:*
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:-:*:*:*
Record truncated, showing 500 of 2495 characters.
View Entire Change Record
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:-:*:*:*:*:*:*
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r1:*:*:*:*:*:*
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r2:*:*:*:*:*:*
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r2.1:*:*:*:*:*:*
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r3:*:*:*:*:*:*
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r3.1:*:*:*:*:*:*
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r3.2:*:*:*:*:*:*
*cpe:2.3:a:
Initial Analysis by NIST 4/26/2021 8:45:59 AM
Action
Type
Old Value
New Value
Added
CVSS V3.1
NIST AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Added
CVSS V2
NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Added
CWE
NIST CWE-287
Added
CPE Configuration
Record truncated, showing 500 of 574 characters.
View Entire Change Record
OR
*cpe:2.3:a:pulsesecure:pulse_connect_secure:*:*:*:*:*:*:*:* versions up to (excluding) 9.0
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:-:*:*:*:*:*:*
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r1:*:*:*:*:*:*
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r2:*:*:*:*:*:*
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r2.1:*:*:*:*:*:*
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.0:r3:*:*:*:*:*:*
*cpe:2.3:a:pulsesecure:pulse_connect_secure:9.1:-:*:*:*
Changed
Reference Type
https://blog.pulsesecure.net/pulse-connect-secure-security-update/ No Types Assigned
https://blog.pulsesecure.net/pulse-connect-secure-security-update/ Vendor Advisory
Changed
Reference Type
https://kb.cert.org/vuls/id/213092 No Types Assigned
https://kb.cert.org/vuls/id/213092 Third Party Advisory, US Government Resource
Changed
Reference Type
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/ No Types Assigned
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/ Vendor Advisory
Changed
Reference Type
https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html No Types Assigned
https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html Third Party Advisory
Quick Info
CVE Dictionary Entry: CVE-2021-22893 NVD
Published Date: 04/23/2021 NVD
Last Modified: 03/21/2025
Source: HackerOne