# CVE-2021-44529: Ivanti Endpoint Manager Cloud Service Appliance (EPM CSA) Code Injection Vulnerability 

- Exploited (CISA KEV): yes, added 2024-03-25, known ransomware use
- Published: 2021-12-08
- CVSS: 9.8 CRITICAL (v3.1)
- EPSS: 99.1% (100th percentile)
- CWE: CWE-94

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

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | Blocks by default | 2025-02-18 | 1168 |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | Before feed history | — | — |
| Fastly | Before feed history | — | — |
| F5 | Before feed history | — | — |
| Akamai | No public source | — | — |
| OWASP CRS | Before feed history | — | — |

### Cloudflare

- 2025-02-18 · new · rule 14b5cdeb4cde490ba37d83555a883e12 · default Block
  > Ivanti - Auth Bypass - CVE:CVE-2021-44529. Previous action: Log. New action: Block. This is a New Detection
  Source: https://developers.cloudflare.com/changelog/post/2025-02-18-waf-release/

## Our test (measured)

- OWASP Core Rule Set 4.25.0, paranoia level 1, anomaly threshold 5, default CRS settings: passed (0 of 1 requests blocked), template CVE-2021-44529, 2026-11-02
- OWASP Core Rule Set 4.25.0, paranoia level 2, anomaly threshold 5, default CRS settings: passed (0 of 1 requests blocked), template CVE-2021-44529, 2026-11-02

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

HTML: https://cve.vigilbase.com/cve/CVE-2021-44529 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2021-44529