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

Source: https://junglewise.ai/threats/cve-2024-4358-progress-telerik-report-server-authentication-bypass-by-spoofing  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2024-06-13. Updated: 2026-05-09  
License: CC BY 4.0 with a link back

CVE-2024-4358 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2024-06-13

Progress Telerik Report Server contains an authentication bypass vulnerability via spoofing when hosted on IIS. An unauthenticated attacker can exploit this to gain unauthorized access to restricted functionality. This vulnerability has been observed being exploited in the wild.

Technologies: [Progress Telerik Report Server](https://junglewise.ai/threats/technologies/telerik-report-server). Vendors: [Progress](https://junglewise.ai/threats/vendors/progress).

## Quick answers

**Is CVE-2024-4358 exploited in the wild?** Yes. CVE-2024-4358 is known to be exploited in the wild, first recorded on 13 June 2024. Treat it as urgent.

**How severe is CVE-2024-4358?** Critical severity, with a CVSS score of 9.8, published 13 June 2024.

**Which products and versions are affected?** Progress Software Corporation Telerik Report Server 2024 Q1 (10.0.24.305) or earlier.

**Is there a fix for CVE-2024-4358?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2024-4358 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2024-4358?** Check whether you run Progress Telerik Report Server. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Progress Software Corporation Telerik Report Server 2024 Q1 (10.0.24.305) or earlier

## Timeline

- 2024-05-29: disclosed: CVE received from Progress Software Corporation and published by NVD
- 2024-06-13: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
- 2024-07-04: other: CISA remediation due date

## Related threats

- [Telerik Report Server external control of system configuration setting](https://junglewise.ai/threats/cve-2026-106152-in-progress-telerik-report-server-prior-to-version-12-3-26-1110)
- [Progress Telerik Report Server authorization bypass in Web Report Designer](https://junglewise.ai/threats/cve-2026-106133-in-progress-telerik-report-server-prior-to-version-12-3-26-1110)
- [Progress Telerik Report Server stored XSS in shared reporting engine](https://junglewise.ai/threats/cve-2026-106155-in-progress-telerik-report-server-prior-to-version-12-2-26-1007)
- [Progress Telerik Report Server privilege escalation in service-agent SignalR hub](https://junglewise.ai/threats/cve-2026-106145-in-progress-telerik-report-server-prior-to-version-12-2-26-1007)