Security readout for executives and security teams
Plain-English summary
CVE-2024-4358 lets an unauthenticated attacker bypass registration authentication in Progress Telerik Report Server on IIS and access restricted server functionality. CISA lists it as known exploited, so exposed systems should be treated as urgent rather than theoretical.
Executive priority
Treat this as an immediate remediation item for any exposed Telerik Report Server. The combination of unauthenticated access, critical CVSS impact, and CISA KEV listing creates material business risk if vulnerable systems remain reachable.
Technical view
The issue is an authentication bypass categorized as CWE-290. Sources describe Progress Telerik Report Server 2024 Q1 (10.0.24.305) or earlier on IIS as affected, with CVSS 9.8 and full confidentiality, integrity, and availability impact. The source bundle does not include exploit mechanics.
Likely exposure
Highest concern is internet-reachable Telerik Report Server on IIS running 2024 Q1 (10.0.24.305) or earlier. Internal deployments still matter if reachable by untrusted users or compromised hosts. Confirm exact affected builds against Progress guidance because supplied affected-version metadata is limited.
Exploitation context
CISA KEV status supports active exploitation. The bundle does not provide exploit details, observed campaigns, attacker names, or exploitation prerequisites beyond unauthenticated network access to affected restricted functionality.
Researcher notes
Do not rely solely on the bundle's structured affected field, which appears sparse. Anchor validation on the narrative description and Progress advisory. No patch version, workaround detail, or exploit procedure is included in the supplied evidence.
Mitigation direction
- Identify all Progress Telerik Report Server deployments.
- Review the Progress Telerik advisory for official fixes or mitigations.
- Prioritize exposed IIS-hosted instances for immediate remediation.
- Restrict network access until vendor guidance is applied.
- Monitor for suspicious access to restricted Report Server functions.
Validation and detection
- Inventory installed Telerik Report Server versions and hosting platform.
- Confirm whether versions are 2024 Q1 10.0.24.305 or earlier.
- Check whether instances are internet-accessible or reachable from untrusted networks.
- Review authentication and access logs for anomalous restricted-function access.
- Verify remediation status against Progress vendor guidance.
Public sources used
Michael Williams reviewed this cited source version on .
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-290: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2024-4358 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://docs.telerik.com/report-server/knowledge-base/registration-auth-bypass-cve-2024-4358CVE reference
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-4358CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Authentication Bypass by Spoofing
Authentication Bypass by Spoofing represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.