Historical catalog analysis: CISA added this entry on February 04, 2025. The entry reflects catalog information retrieved on August 31, 2026, not a snapshot archived on the inclusion date. Check current vendor guidance before acting.
What the vulnerability is
CVE-2024-29059 is an information disclosure vulnerability (CWE-209) affecting the Microsoft .NET Framework. The flaw allows for the exposure of the ObjRef URI to an attacker. According to source data, this disclosure can ultimately be leveraged to enable remote code execution (RCE).
Exposure and applicability
This vulnerability applies to environments utilizing the Microsoft .NET Framework. Because CISA added this CVE to its Known Exploited Vulnerabilities (KEV) catalog on February 4, 2025, it is categorized as a vulnerability with evidence of active exploitation in the wild. This elevates the priority for infrastructure owners and security leaders who manage legacy or current .NET Framework deployments across their server and workstation fleets.
Remediation priorities
Our analysis suggests prioritizing remediation based on the asset’s exposure to untrusted networks, given the potential for remote code execution.
- Immediate Patching: The primary corrective action is to apply mitigations as specified in vendor instructions from Microsoft.
- Asset Inventory: Identify all instances of the .NET Framework across the environment to ensure no shadow IT or legacy systems remain unpatched.
- Decommissioning: In cases where vendor mitigations are unavailable or cannot be applied due to compatibility constraints, the source recommends discontinuing use of the product.
How to validate remediation
Verification must move beyond a simple version check, as a deployed patch does not always guarantee that the vulnerability is mitigated in the active runtime environment.
- Deployment Verification: Confirm through configuration management tools that the specific vendor-supplied security update has been successfully installed across all identified assets.
- Exposure Reduction Evidence: Defenders should verify that the ObjRef URI is no longer exposed to unauthorized requests. This can be achieved by observing system behavior under authorized testing conditions to ensure the information disclosure path is closed.
Limits and open questions
While the vulnerability is known to be exploited, the source lists its use in known ransomware campaigns as “Unknown.” There remains a residual risk that existing compromises may have occurred prior to patching. Furthermore, while applying vendor updates reduces the likelihood of exploitation, it does not eliminate all risks associated with the underlying architecture of the .NET Framework’s handling of object references.
Source and editorial note
CVE-2024-29059: Microsoft .NET Framework Information Disclosure Vulnerability · Source date: February 04, 2025 · Retrieved August 31, 2026.
Material facts are tied to the cited primary source. Recommendations are independent defensive analysis unless attributed to the source. Confirm consequential decisions against current authoritative guidance.
Archive date: February 07, 2025. The displayed post date is assigned three days after the source date to organize this retrospective archive; it does not mean this site published the analysis then. First published by this site: October 26, 2026 at 00:31 UTC.
Request a Vulnerability Assessment
Turn security intelligence into action.
Discuss your exposure, priorities, and the evidence needed to validate the outcome.
Request a security assessment ↗