CVE-2021-44529
CriticalExploitedPublic exploitA code injection vulnerability in the Ivanti EPM Cloud Services Appliance (CSA) allows an unauthenticated user to execute arbitrary code with limited permissions (nobody).
Published Dec 8, 2021 · Updated Aug 4, 2026
Key Facts
Patch immediately- CVE-2021-44529 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Endpoint Manager Cloud Services Appliance (Ivanti), Ivanti EPM.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Feb 29, 2024 and is known to be used in ransomware campaigns. Public exploit code is available.
- EPSS estimates a 99% probability of exploitation in the next 30 days.
- Fixed versions are available, including Endpoint Manager Cloud Services Appliance <=4.5, Endpoint Manager Cloud Services Appliance 4.5.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
99%
Higher than 99.9% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings, used by ransomware
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2021-44529 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
A code injection vulnerability in the Ivanti EPM Cloud Services Appliance (CSA) allows an unauthenticated user to execute arbitrary code with limited permissions (nobody).
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Mar 25, 2024 | Apr 15, 2024 | Known |
| Industry KEV feed | Feb 29, 2024 | Apr 15, 2024 | Known |
| CIRCL KEV | Mar 25, 2024 | Apr 15, 2024 | Known |
| ENISA EUVD | Mar 25, 2024 | n/a | Not reported |
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Endpoint Manager Cloud Services ApplianceIvanti | 4.6 | 4.5 |
| Ivanti EPM | >= 4.6.0-512 | n/a |
Patched Releases
Endpoint Manager Cloud Services Appliance
<=4.5
Timeline
Publicly disclosed
Dec 8, 2021
Added to Industry KEV feed
Feb 29, 2024
Added to CISA KEV
Mar 25, 2024
Added to CIRCL KEV
Mar 25, 2024
Added to ENISA EUVD
Mar 25, 2024
Last updated
Aug 4, 2026
Weakness Type
- CWE-94 Improper Control of Generation of Code ('Code Injection')
References
- patchhttps://forums.ivanti.com/s/article/SA-2021-12-02
- exploithttp://packetstormsecurity.com/files/166383/Ivanti-Endpoint-Manager-CSA-4.5-4.6-Remote-Code-Execution.html
- exploithttp://packetstormsecurity.com/files/170590/Ivanti-Cloud-Services-Appliance-CSA-Command-Injection.html
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
A code injection vulnerability in the Ivanti EPM Cloud Services Appliance (CSA) allows an unauthenticated user to execute arbitrary code with limited permissions (nobody).
Affected: Endpoint Manager Cloud Services Appliance (Ivanti) versions 4.6; Ivanti EPM versions >= 4.6.0-512. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Feb 29, 2024 and is known to be used in ransomware campaigns.
Yes. It was added on Mar 25, 2024 with a federal remediation due date of Apr 15, 2024.
Public exploit code is available.
Fixed versions are available, including Endpoint Manager Cloud Services Appliance <=4.5, Endpoint Manager Cloud Services Appliance 4.5.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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