# CVE-2024-7591: Improper Input Validation vulnerability in Progress LoadMaster allows OS Command Injection

- Exploited (CISA KEV): no
- Published: 2024-09-05
- CVSS: 10 CRITICAL (v3.1)
- EPSS: 39.2% (99th percentile)
- CWE: CWE-78

Improper Input Validation vulnerability in Progress LoadMaster allows OS Command Injection.This issue affects:

* LoadMaster: 7.2.40.0 and above

* ECS: All versions

* Multi-Tenancy: 7.1.35.4 and above

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

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | Blocks by default | 2025-06-02 | 270 |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | No public claim | — | — |
| Fastly | Before feed history | — | — |
| F5 | No public claim | — | — |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

### Cloudflare

- 2025-06-02 · new · rule 840b35492a7543c18ffe50fc0d99b2db · default Block
  > Kemp LoadMaster - Remote Code Execution - CVE:CVE-2024-7591. Previous action: Log. New action: Block. This is a New Detection
  Source: https://developers.cloudflare.com/changelog/post/2025-06-02-waf-release/

## Our test (measured)

- OWASP Core Rule Set 4.25.0, paranoia level 1, anomaly threshold 5, default CRS settings: partial (1 of 2 requests blocked), template CVE-2024-7591, 2026-11-02
- OWASP Core Rule Set 4.25.0, paranoia level 2, anomaly threshold 5, default CRS settings: partial (1 of 2 requests blocked), template CVE-2024-7591, 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-2024-7591 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2024-7591