EOL .NET 6.0 Runtime Remote Code Execution Vulnerability

Description

A vulnerability (CVE-2025-21172) exists in msdia140.dll due to integer overflow and heap-based overflow. Per CWE-122: Heap-based Buffer Overflow, a heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().‍ Per CWE-190: Integer Overflow or Wraparound, is when a product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number. NOTE: This CVE affects only End Of Life (EOL) software components. The vendor, Microsoft, has indicated there will be no future updates nor support provided upon inquiry.

Scores

EPSS (exploitation in 30 days)

0.56% · top 53% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: total

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

• CWE-190: Integer Overflow or Wraparound (opens in a new tab)All about CWE-190 and its CVEs
• CWE-122: Heap-based Buffer Overflow (opens in a new tab)All about CWE-122 and its CVEs

Affected products

• Microsoft · .NET 6.0

  • affected 6.0.0 – < 6.0.36

• Microsoft · Microsoft.NetCore.App.Runtime.linux-arm

  • affected >=6.0.0 – ≤ 6.0.36

• Microsoft · Microsoft.NetCore.App.Runtime.linux-arm64

  • affected >=6.0.0 – ≤ 6.0.36

• Microsoft · Microsoft.NetCore.App.Runtime.linux-musl-arm

  • affected >=6.0.0 – ≤ 6.0.36

• Microsoft · Microsoft.NetCore.App.Runtime.linux-musl-arm64

  • affected >=6.0.0 – ≤ 6.0.36

• Microsoft · Microsoft.NetCore.App.Runtime.linux-musl-x64

  • affected >=6.0.0 – ≤ 6.0.36

• Microsoft · Microsoft.NetCore.App.Runtime.linux-x64

  • affected >=6.0.0 – ≤ 6.0.36

• Microsoft · Microsoft.NetCore.App.Runtime.osx-arm64

  • affected >=6.0.0 – ≤ 6.0.36

• Microsoft · Microsoft.NetCore.App.Runtime.osx-x64

  • affected >=6.0.0 – ≤ 6.0.36

• Microsoft · Microsoft.NetCore.App.Runtime.win-arm

  • affected >=6.0.0 – ≤ 6.0.36

• Microsoft · Microsoft.NetCore.App.Runtime.win-arm64

  • affected >=6.0.0 – ≤ 6.0.36

• Microsoft · Microsoft.NetCore.App.Runtime.win-x64

  • affected >=6.0.0 – ≤ 6.0.36

• Microsoft · Microsoft.NetCore.App.Runtime.win-x86

  • affected >=6.0.0 – ≤ 6.0.36

References (2)

• .NET and Visual Studio Remote Code Execution Vulnerability (opens in a new tab)third-party-advisory
• .NET and Visual Studio Remote Code Execution Vulnerability (opens in a new tab)vendor-advisory

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2025-36853](https://trackcve.app/badge/CVE-2025-36853.svg)](https://trackcve.app/cve/CVE-2025-36853)

Record last updated 8 Sept 2025, 13:52 UTC.