← CVE Radar
CVE-2021-22893Ivanti Pulse Connect Secure Use-After-Free Vulnerability
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.
10.0 CRITICALEPSS 47.50%⚡ Known Exploited (CISA KEV)NVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 10.0 | CRITICAL | 3.1NVD | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| 7.5 | HIGH | 2.0NVD | AV:N/AC:L/Au:N/C:P/I:P/A:P |
CISA required action
⚡ Known exploited · remediation due May 3, 2022
Apply updates per vendor instructions.
Details
- CVE ID
- CVE-2021-22893
- Status
- Analyzed
- Assigner (CNA)
- hackerone
- Published
- Apr 23, 2021
- Last modified
- 2026-08-12 05:17 UTC
Affected Products
As published by the CNA in the CVE record.
Pulse Connect Secure1 version range
- PCS 9.0R3 or above, PCS 9.1R1 and above
References
- blog.pulsesecure.net https://blog.pulsesecure.net/pulse-connect-secure-security-update/
- kb.cert.org https://kb.cert.org/vuls/id/213092
- kb.pulsesecure.net https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/
- fireeye.com https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html
- kb.cert.org https://www.kb.cert.org/vuls/id/213092
- cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22893