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Findings

CVE-2021-22893

Ivanti Pulse Connect Secure Use-After-Free Vulnerability

Published Apr 23, 2021 · updated Aug 11, 2026 · ivanti 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.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 23, 2021 · Catalog

    Detected

    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.

  2. Nov 3, 2021 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. May 3, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Aug 11, 2026 · Catalog

    Updated

    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.

Required action

Apply updates per vendor instructions.

CISA due date May 3, 2022

Affected

  • cpe ivanti/connect secure9.0
  • vendor Ivanti Pulse Connect Secureversion unspecified

Sources

  • CISA KEVCVE-2021-22893

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

    cisa.gov
  • CVE.orgCVE-2021-22893

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2021-22893

    30-day exploitation probability 47.2%

    first.org
  • NIST NVDCVE-2021-22893

    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 ex

    nvd.nist.gov

References

CVE-2021-22893 · ZeroDay Findings