Security Digest · Vulnerability record · Known exploited
CVE-2024-4358: Progress Telerik Report Server Authentication Bypass by Spoofing Vulnerability
Exploited in the wild (CISA KEV). 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.
CISA KEV · added 2024-06-13 CVSS 9.8 Critical EPSS 97.5% · p99.9
Should you act?
Exploited: patch now if you run it
CISA has confirmed exploitation in the wild. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- Yes, if you run Progress Telerik Report Server. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2024-06-13, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2024-07-04; treat that as the outer limit, not the target.
- EPSS 97.5%, percentile 99.9: FIRST’s model estimates a 97.5% chance of exploitation activity in the next 30 days, higher than 99.9% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
What it is
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.
CISA’s summary
Progress Telerik Report Server contains an authorization bypass by spoofing vulnerability that allows an attacker to obtain unauthorized access.
Weakness type: CWE-290.
Product: Progress Telerik Report Server · Assigned by: ProgressSoftware · Published: 2024-05-29
Affected and fixed versions
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| Progress Software Corporation | Telerik Report Server | 1.0.0 < 10.1.24.514 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ProgressSoftware | 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Privileges required: none (no login)
- User interaction: none
- Scope: unchanged
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: added 2024-06-13; federal due date 2024-07-04. Known ransomware use: Unknown.
- CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CISA SSVC assessment: exploitation active, automatable yes, technical impact total.
- FIRST EPSS (model of 2026-10-21): 97.48% probability of exploitation activity in the next 30 days; percentile 99.9.
Timeline
- — CVE record published by ProgressSoftware
- — Added to CISA’s Known Exploited Vulnerabilities catalog
- — CISA remediation deadline for US federal agencies
- — CVE record last updated
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vendor and project advisories, patches
- Listed in CISA KEV notes (docs.telerik.com) docs.telerik.com
Vulnerability records
- CVE.org record CVE-2024-4358 cve.org
- NVD entry CVE-2024-4358 nvd.nist.gov
Government
All exploited Progress vulnerabilities · Today’s Security Digest