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Vulnerabilities

Vulnerability · CVE-2021-22900

Ivanti Pulse Connect Secure Unrestricted File Upload Vulnerability

Published May 27, 2021 · catalog updated Jun 16, 2026 · Ivanti Connect Secure and Policy Secure

Patch now

CVE-2021-22900 is in the CISA known-exploited catalog, due May 3, 2022. Confirm Ivanti Connect Secure and Policy Secure against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
High7.2
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
14.15%
Remediation
Remediation guidance
Affected products
cpe ivanti/connect secure · vendor Ivanti Connect Secure and Policy Secure · vendor Ivanti Pulse Connect Secure

A vulnerability allowed multiple unrestricted uploads in Pulse Connect Secure before 9.1R11.4 that could lead to an authenticated administrator to perform a file write via a maliciously crafted archive upload in the administrator web interface.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

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

How to fix CVE-2021-22900

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2021-22900 is in the CISA known-exploited catalog, due May 3, 2022. Confirm Ivanti Connect Secure and Policy Secure against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with ivanti/connect secure 9.0. Apply updates per vendor instructions.

What should an analyst verify?

CWE-669: Incorrect Resource Transfer Between Spheres; CWE-94: Code Injection. EPSS 14.15%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 27, 2021 · Catalog

    Detected

    A vulnerability allowed multiple unrestricted uploads in Pulse Connect Secure before 9.1R11.4 that could lead to an authenticated administrator to perform a file write via a maliciously crafted archive upload in the administrator web interface.

  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. Jun 16, 2026 · Catalog

    Updated

    A vulnerability allowed multiple unrestricted uploads in Pulse Connect Secure before 9.1R11.4 that could lead to an authenticated administrator to perform a file write via a maliciously crafted archive upload in the administrator web interface.

Sources

  • CISA KEVConfirmed exploitationCVE-2021-22900

    Ivanti Pulse Connect Secure contains an unrestricted file upload vulnerability that allows an authenticated administrator to perform a file write via a maliciously crafted archive upload in the administrator web interface.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2021-22900

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2021-22900

    30-day exploitation probability 14.1%

    first.org
  • NIST NVDVulnerability recordCVE-2021-22900

    A vulnerability allowed multiple unrestricted uploads in Pulse Connect Secure before 9.1R11.4 that could lead to an authenticated administrator to perform a file write via a maliciously crafted archive upload in the administrator web interface.

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2021-22900

    Ivanti Pulse Connect Secure contains an unrestricted file upload vulnerability that allows an authenticated administrator to perform a file write via a maliciously crafted archive upload in the administrator web interface.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.