CVEvulnerability
CVE-2021-22893
CISA Known Exploited Vulnerability
Ivanti Pulse Connect Secure Use-After-Free Vulnerability — Ivanti Pulse Connect Secure
Ivanti Pulse Connect Secure contains a use-after-free vulnerability that allow a remote, unauthenticated attacker to execute code via license services.
- Added to KEV
- 2021-11-03
- Remediation due
- 2022-05-03
- Ransomware use
- Known
- Required action
- Apply updates per vendor instructions.
- Notes
- Reference CISA's ED 21-03 (https://www.cisa.gov/news-events/directives/ed-21-03-mitigate-pulse-connect-secure-product-vulnerabilities) for further guidance and requirements. Note: The due date for addressing this vulnerability aligns with the requirements outlined in ED 21-03. https://nvd.nist.gov/vuln/detail/CVE-2021-22893
- Status
- Analyzed
- Published
- 2021-04-23
- Last modified
- 2026-08-12
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 10.0 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 10.0 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-287, CWE-416
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.
Affected configurations
• ivanti connect secure 9.0
• ivanti connect secure 9.1
Related
References
- https://blog.pulsesecure.net/pulse-connect-secure-security-update/ Vendor Advisory
- https://kb.cert.org/vuls/id/213092 Third Party Advisory, US Government Resource
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/ Broken Link, Vendor Advisory
- https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html Third Party Advisory
- https://blog.pulsesecure.net/pulse-connect-secure-security-update/ Vendor Advisory
- https://kb.cert.org/vuls/id/213092 Third Party Advisory, US Government Resource
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44784/ Broken Link, Vendor Advisory
- https://www.fireeye.com/blog/threat-research/2021/04/suspected-apt-actors-leverage-bypass-techniques-pulse-secure-zero-day.html Third Party Advisory
- https://www.kb.cert.org/vuls/id/213092 US Government Resource
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22893 US Government Resource