# CVE-2021-37417: CVE-2021-37417

- Exploited (CISA KEV): no
- Published: 2021-08-30
- CVSS: not scored
- EPSS: 4.8% (92th percentile)

Zoho ManageEngine ADSelfService Plus version 6103 and prior allows CAPTCHA bypass due to improper parameter validation.

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

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | Before feed history | — | — |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | Before feed history | — | — |
| Fastly | Before feed history | — | — |
| F5 | Rule published | 2022-12-06 | 463 |
| Akamai | No public source | — | — |
| OWASP CRS | Before feed history | — | — |

### F5

- 2022-12-06 · new · rule 200014026
  > Added: signature 200014026 "Zoho ManageEngine ADSelfService Plus CAPTCHA bypass" (Abuse of Functionality, risk Medium), systems: Microsoft Windows, Java Servlets/JSP. References: CVE-2021-37417.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog

"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-2021-37417 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2021-37417