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Fencer Vulns
critical 9.8

CVE-2024-4358 kev in the critical feed json

Registration Authentication Bypass Vulnerability

published 2024-05-29 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-43994

cvss
9.8
version 3.1, CNA
cisa kev
Exploited
added 2024-06-13
epss
97.5%
EPSS 97.5% chance of exploitation in 30 days, percentile 99.8%
public exploits
3
Metasploit, Exploit-DB, plus a Nuclei check

Summary

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.

Patch / fix

cisa required action Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

  • Progress Software Corporation Telerik Report Server 10.1.24.514
  • progress_software telerik_report_server 10.1.24.514

Timeline

  1. Published
  2. First public exploit (Metasploit auxiliary/scanner/http/telerik_report_server_auth_bypass)
  3. Added to CISA KEV
  4. CISA SSVC: exploitation active
  5. CISA patch deadline

Known exploited

Added
2 y ago
Patch by
2024-07-04 (2 y ago)
Ransomware
Not known
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Vendor, product
Progress, Telerik Report Server
CISA name
Progress Telerik Report Server Authentication Bypass by Spoofing Vulnerability

ATT&CK techniques

How it is exploited and what it leads to, in MITRE ATT&CK terms.

  • T1190 Exploit Public-Facing Application exploitation

kev release 2025-07-28, att&ck v16.1. KEV to ATT&CK mappings by the MITRE Center for Threat-Informed Defense (Mappings Explorer, Apache-2.0). © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. Terms of use

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
yes
Technical impact
total
Assessed
2 y ago

Exploit prediction

97.48% chance of exploitation in the next 30 days, higher than 99.8% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Progress Software Corporation Telerik Report Server
  • progress_software telerik_report_server

Classification

Weakness
  • CWE-290 Authentication Bypass by Spoofing

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.