CVE-2021-22893

Pulse Connect Secure 9.0R3/9.1R1 and higher is vulnerable to an authentication bypass...

10.0 CriticalIn KEVPublic exploit

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

47.5%Up 37.5 points since Apr 27, 2021

What each source reports

NVD Score used 10.0

Record: CVE-2021-22893
CVSS 3.1: 10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-287, CWE-416
Updated: 2026-11-02

CVE List 10.0

Record: CVE-2021-22893
CVSS 3.1: 10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness: CWE-287
Updated: 2026-11-02

EUVDEUVD-2021-10025 10.0

Record: EUVD-2021-10025
CVSS 3.1: 10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-hcxw-prp6-q3jq 10.0

Pulse Connect Secure 9.0R3/9.1R1 and higher is vulnerable to an authentication bypass...

Record: GHSA-hcxw-prp6-q3jq
CVSS 3.1: 10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness: CWE-287, CWE-416
Updated: 2026-11-02

CISA KEV No score

Ivanti Pulse Connect Secure Use-After-Free Vulnerability

Ivanti Pulse Connect Secure contains a use-after-free vulnerability that allow a remote, unauthenticated attacker to execute code via license services.

Record: CVE-2021-22893
Weakness: CWE-287
Updated: 2026-11-02

Affected products

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
PoC in GitHub	MRLEE123456/CVE-2021-22893	2021-04-21
PoC in GitHub	ZephrFish/CVE-2021-22893_HoneyPoC2	2021-04-21
PoC in GitHub	orangmuda/CVE-2021-22893	2021-10-03

History

History
Recorded	Changed	Sources
Nov 3, 2026	exploitation
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, CISA KEV, NVD, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-22893 is a critical vulnerability (CVSS 10.0) in Ivanti Connect Secure, published April 23, 2021. CISA lists it as known to be exploited, since November 3, 2021. EUVD reports exploitation since November 3, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 47.5%, the 98th percentile. No source names a fixed version.