CVE-2025-36853Network attack vector

Code execution via msdia140.dll integer overflow

Published Sep 8, 2025 · Updated Sep 8, 2025

Memory corruption in Microsoft .NET 6.0 before 6.0.36 allows remote attackers to execute code through a crafted file. The msdia140.dll component mishandles an integer calculation while processing file data, leading to a heap-based buffer overflow. Exploitation requires a user to load the crafted file in Visual Studio, after which code runs in that user's security context.

CVSS severityUnavailable
Unscored
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in Microsoft .NET 6.0 before 6.0.36 allows remote attackers to execute code through a crafted file. The msdia140.dll component mishandles an integer calculation while processing file data, leading to a heap-based buffer overflow. Exploitation requires a user to load the crafted file in Visual Studio, after which code runs in that user's security context.

The record

CVE
CVE-2025-36853
Published
Sep 8, 2025
Updated
Sep 8, 2025
Vendor
Microsoft
Product
.NET 6.0
Classifications
CWE-122, CWE-190, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 8, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=6.0.0 <6.0.36

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · .NET 6.0version=6.0.0 <6.0.36
Microsoft · .NET Runtimeversion=>=6.0.0 <=6.0.36

Published CVSS scores

No CVSS assessment is available in this record.

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
CWE-190Integer Overflow or Wraparound
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

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Your stack

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