Back to KEVs

CVE-2021-22893

Pulse Connect Secure 9.0R3/9.1R1 and higher is vulnerable to an authentication bypass vulnerability exposed by the Windows File Share Browser and...

Basic Information

CVE State
PUBLISHED
Reserved Date
January 06, 2021
Published Date
April 23, 2021
Last Updated
February 04, 2025
Vendor
n/a
Product
Pulse Connect Secure
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.
Tags
windows cisa malware ransomware

CVSS Scores

CVSS v3.1

10.0 - CRITICAL

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

CVSS v2.0

7.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

SSVC Information

Exploitation
active
Automatable
Yes
Technical Impact
total

Exploit Status

Exploited in the Wild
Yes (2021-11-03 00:00:00 UTC) Source
Proof of Concept Available
Yes (added 2021-04-21 14:39:42 UTC) Source
Used in Malware
Yes (added 2021-11-03 00:00:00 UTC) Source

References

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/ https://blog.pulsesecure.net/pulse-connect-secure-security-update/ https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html https://kb.cert.org/vuls/id/213092

Known Exploited Vulnerability Information

Source Added Date
CISA 2021-11-03 00:00:00 UTC

Potential Proof of Concepts

Warning: These PoCs have not been tested and could contain malware. Use at your own risk.

orangmuda/CVE-2021-22893

Type: github • Created: 2021-10-03 21:46:58 UTC • Stars: 7

Proof On Concept — Pulse Secure CVE-2021-22893

MRLEE123456/CVE-2021-22893

Type: github • Created: 2021-04-21 14:39:42 UTC • Stars: 0

Pulse Connect Secure RCE Vulnerability (CVE-2021-22893)

ZephrFish/CVE-2021-22893_HoneyPoC2

Type: github • Created: 2021-04-21 09:48:57 UTC • Stars: 47

DO NOT RUN THIS.

Timeline

  • CVE ID Reserved

  • Proof of Concept Exploit Available

  • CVE Published to Public

  • Exploit Used in Malware

  • Added to KEVIntel