# CVE-2026-8037: Progress LoadMaster Command Injection Vulnerability

- Exploited (CISA KEV): yes, added 2026-08-07
- Published: 2026-06-04
- CVSS: 9.6 CRITICAL (v3.1)
- EPSS: 99.8% (100th percentile)
- CWE: CWE-77

OS Command Injection Remote Code Execution Vulnerability in API in Progress ADC Products allows an un-authenticated attacker to execute arbitrary commands on the LoadMaster appliance by exploiting unsanitized input in multiple command endpoints

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

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | Blocks by default | 2026-07-14 | 40 |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | No public claim | — | — |
| Fastly | Before feed history | — | — |
| F5 | Rule published | 2026-09-16 | 104 |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

### Cloudflare

- 2026-07-14 · new · rule 6b64d216620449fbb273d07910233f36 · default Block
  > Progress Kemp LoadMaster - Remote Code Execution - CVE:CVE-2026-8037. Previous action: Log. New action: Block. This is a new detection.
  Source: https://developers.cloudflare.com/changelog/post/2026-07-14-waf-release/

### F5

- 2026-09-16 · new · rule 200011110
  > Added: signature 200011110 "Progress Kemp LoadMaster RCE" (Buffer Overflow, risk High), systems: Other Web Server. References: CVE-2026-8037.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog

## Our test (measured)

- OWASP Core Rule Set 4.25.0, paranoia level 1, anomaly threshold 5, default CRS settings: blocked (1 of 1 requests blocked), template CVE-2026-8037, 2026-11-02
- OWASP Core Rule Set 4.25.0, paranoia level 2, anomaly threshold 5, default CRS settings: blocked (1 of 1 requests blocked), template CVE-2026-8037, 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-2026-8037 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2026-8037