# CVE-2024-4358: Progress Telerik Report Server Authentication Bypass by Spoofing Vulnerability

- Exploited (CISA KEV): yes, added 2024-06-13
- Published: 2024-05-29
- CVSS: 9.8 CRITICAL (v3.1)
- EPSS: 97.5% (100th percentile)
- CWE: CWE-290

In Progress Telerik Report Server, version 2024 Q1 (10.0.24.305) or earlier, on IIS, an unauthenticated attacker can gain access to Telerik Report Server restricted functionality via an authentication bypass vulnerability.

## 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 | No public claim | — | — |
| Fastly | Before feed history | — | — |
| F5 | Rule published | 2025-05-22 | 358 |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

### F5

- 2025-05-22 · new · rule 200013110
  > Added: signature 200013110 "Progress Telerik Report Server Authentication Bypass" (Authentication/Authorization Attacks, risk High), systems: IIS, Other Web Server. References: CVE-2024-4358.
  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: passed (0 of 2 requests blocked), template CVE-2024-4358, 2026-11-02
- OWASP Core Rule Set 4.25.0, paranoia level 2, anomaly threshold 5, default CRS settings: passed (0 of 2 requests blocked), template CVE-2024-4358, 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-2024-4358 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2024-4358