CVE-2024-29059Known exploitationPublic exploitNetwork attack vector

Remote code execution via exposed ObjRef URI

Published Mar 22, 2024 · Updated Oct 21, 2025

Information disclosure in Microsoft .NET Framework allows remote attackers to obtain an ObjRef URI through HTTP .NET Remoting. The HTTP Remoting metadata handler processes a crafted request and returns a serialized ObjRef containing the object's unique URI and channel data. An exposed HTTP Remoting service is required; the leaked URI enables unauthenticated payload delivery to the remote object and remote code execution.

CVSS severity7.5
High
EPSS probability98.62%
Next 30 days · Nov 1, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Microsoft .NET Framework allows remote attackers to obtain an ObjRef URI through HTTP .NET Remoting. The HTTP Remoting metadata handler processes a crafted request and returns a serialized ObjRef containing the object's unique URI and channel data. An exposed HTTP Remoting service is required; the leaked URI enables unauthenticated payload delivery to the remote object and remote code execution.

The record

CVE
CVE-2024-29059
Published
Mar 22, 2024
Updated
Oct 21, 2025
Vendor
Microsoft Corporation
Product
Microsoft .NET Framework 3.5 and 4.8.1
Classifications
CWE-209, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 22, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 4, 2025Exploitation reportedCISA Known Exploited Vulnerabilities entry
  3. Oct 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.8.1 <4.8.09214.01

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft Corporation · Microsoft .NET Framework 3.5 and 4.8.1version=4.8.1 <4.8.09214.01
Microsoft Corporation · Microsoft .NET Framework 3.5 and 4.8version=4.8.0 <4.8.04690.02
Microsoft Corporation · Microsoft .NET Framework 2.0 Service Pack 2version=2.0.0 <3.0.50727.8976
Microsoft Corporation · Microsoft .NET Framework 3.0 Service Pack 2version=3.0.0 <3.0.50727.8976
Microsoft Corporation · Microsoft .NET Framework 3.5.1version=3.5.0 <3.0.30729.8959
Microsoft Corporation · Microsoft .NET Framework 3.5 and 4.7.2version=4.7.0 <4.7.04081.03
Microsoft Corporation · Microsoft .NET Frameworkversion=10.0.0 <10.0.10240.20402; version=4.7.0 <4.7.04081.03
Microsoft Corporation · Microsoft .NET Framework 4.6.2version=4.7.0 <4.7.04081.03
Microsoft Corporation · Microsoft .NET Framework 3.5version=3.5.0 <3.0.50727.8976
Microsoft Corporation · Microsoft .NET Framework 4.8version=4.8.0 <4.8.04690.02

Published CVSS scores

7.5MicrosoftCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsShadowserver observations through Sep 28, 2026. Gaps indicate unavailable data.
Sep 22, 2026Sep 28, 2026
View daily counts
Reporting dayUnique IPs
Sep 22, 20266
Sep 23, 202610
Sep 24, 20266
Sep 25, 20266
Sep 26, 20269
Sep 27, 20269
Sep 28, 202614
Latest reporting daySep 28, 2026
Latest daily unique IPs14
Prior 30-day average7.5
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-209Generation of Error Message Containing Sensitive Information
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

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Your stack

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