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CVE-2021-44529 CISA KEV — actively exploited Ransomware-linked

Ivanti Endpoint Manager Cloud Service Appliance (EPM CSA) Code Injection Vulnerability

n/a — Ivanti EPM

A code injection vulnerability in the Ivanti EPM Cloud Services Appliance (CSA) allows an unauthenticated user to execute arbitrary code with limited permissions (nobody).

CVSS scoreCritical

9.8

EPSS — exploitation probabilityCritical

99.1%

Vector breakdown

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Published
Dec 8, 2021
Modified
Oct 21, 2025
Added to KEV
Mar 25, 2024
Federal patch due
Apr 15, 2024

CISA required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Weakness classification

CWE-94Improper Control of Generation of Code

Proof-of-concept & exploitation references

Weaponization

Nuclei template

Available

Metasploit module

Not found

Public repositories whose name or description references CVE-2021-44529, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.

No public GitHub repositories referencing CVE-2021-44529 were found at last check. Absence here is not proof no exploit exists - see the references below for vendor advisories and write-ups.

References

  • forums.ivanti.com
  • packetstormsecurity.com
  • packetstormsecurity.com

Frequently asked questions

What is CVE-2021-44529?

A code injection vulnerability in the Ivanti EPM Cloud Services Appliance (CSA) allows an unauthenticated user to execute arbitrary code with limited permissions (nobody).

How severe is CVE-2021-44529?

CVE-2021-44529 has a CVSS base score of 9.8 out of 10 (CVSS 3.1).

Is CVE-2021-44529 actively exploited in the wild?

Yes. CVE-2021-44529 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Mar 25, 2024, meaning CISA has confirmed evidence of active exploitation. It is also flagged as used in ransomware campaigns.

What is the EPSS score for CVE-2021-44529?

99.1% - meaning FIRST.org's EPSS model estimates a 99.1% probability this vulnerability will be exploited in the wild within 30 days (100% percentile among all scored CVEs).

Is there exploit tooling available for CVE-2021-44529?

Yes - a public Nuclei template referencing CVE-2021-44529 exist in public repositories we checked.

What type of vulnerability is CVE-2021-44529?

CVE-2021-44529 is classified under CWE-94 (Code Injection (CWE-94)).

Cross-checked against

  • NVD (NIST)
  • MITRE CVE Record
  • CISA KEV
  • FIRST.org EPSS
  • GitHub Advisory Database
  • GitHub public repository search

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