Security News > 2021 > May > Critical Patch Out for Critical Pulse Secure VPN 0-Day Under Attack
Ivanti, the company behind Pulse Secure VPN appliances, has released a security patch to remediate a critical security vulnerability that was found being actively exploited in the wild by at least two different threat actors.
Tracked as CVE-2021-22893, the flaw concerns "Multiple use after free" issues in Pulse Connect Secure that could allow a remote unauthenticated attacker to execute arbitrary code and take control of the affected system.
All Pulse Connect Secure versions prior to 9.1R11.4 are impacted.
"Companywide we are making significant investments to enhance our overall cybersecurity posture, including a more broad implementation of secure application development standards."
Pulse Secure customers are advised to move quickly to apply the update to ensure they are protected.
The company has also released a Pulse Connect Secure Integrity Tool to check for signs of compromise and identify malicious activity on their systems.
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Related Vulnerability
| DATE | CVE | VULNERABILITY TITLE | RISK |
|---|---|---|---|
| 2021-04-23 | CVE-2021-22893 | Use After Free vulnerability in Ivanti Connect Secure 9.0/9.1 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. | 10.0 |