CISA KEV · Known exploitedCritical

CVE-2021-22893

Ivanti Pulse Connect Secure

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.

CVSS: 10
EPSS: 47.2%
CISA KEV: Listed
Published: 2021.04.24

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability47.2%

Technical severityCVSS 10

Vulnerability overview

Affected product and versions

Product: Ivanti Pulse Connect Secure
Affected versions: PCS 9.0R3 or above, PCS 9.1R1 and above, 9.0, 9.1
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA required action

Apply updates per vendor instructions.

Due date: 2022.05.03

1
Identify
Confirm that Ivanti Pulse Connect Secure and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE: CWE-287, CWE-416
KEV added: 2021.11.03
Ransomware use: 확인됨