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CVE-2026-50649

Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:4015e96e80be8e86f962382559334bb9f6e00af72a4de36f7bb8efdb667a88b7
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 10 assertions

{"product":".NET 8.0","vendor":"Microsoft","versions":[{"lessThan":"8.0.29","status":"affected","version":"8.0.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:36a1f09e6cded451f84c753a0eb39f093c129e0981eeb97b0adb5c9e0bc0c780 · sha256:b5e679e16573c759… · /containers/cna/affected/0

{"platforms":["Windows 10 Version 1607 for 32-bit Systems","Windows 10 Version 1607 for x64-based Systems","Windows 10 Version 1809 for 32-bit Systems","Windows 10 Version 1809 for x64-based Systems","Windows Server 2016","Windows Server 2016 (Server Core installation)","Windows Server 2019","Windows Server 2019 (Server Core installation)"],"product":"Microsoft .NET Framework 3.5 AND 4.7.2","vendor":"Microsoft","versions":[{"lessThan":"2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0","status":"affected","version":"4.7.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:36a1f09e6cded451f84c753a0eb39f093c129e0981eeb97b0adb5c9e0bc0c780 · sha256:b5e679e16573c759… · /containers/cna/affected/3

{"platforms":["Windows 11 Version 26H1 for ARM64-based Systems","Windows 11 version 26H1 for x64-based Systems"],"product":"Microsoft .NET Framework 4.8.1","vendor":"Microsoft","versions":[{"lessThan":"4.8.9340.0","status":"affected","version":"4.8.0.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:36a1f09e6cded451f84c753a0eb39f093c129e0981eeb97b0adb5c9e0bc0c780 · sha256:b5e679e16573c759… · /containers/cna/affected/8

{"product":".NET 9.0","vendor":"Microsoft","versions":[{"lessThan":"9.0.18","status":"affected","version":"9.0.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:36a1f09e6cded451f84c753a0eb39f093c129e0981eeb97b0adb5c9e0bc0c780 · sha256:b5e679e16573c759… · /containers/cna/affected/1

{"platforms":["Windows 11 Version 26H1 for ARM64-based Systems","Windows 11 version 26H1 for x64-based Systems","Windows Server 2012","Windows Server 2012 (Server Core installation)","Windows Server 2012 R2","Windows Server 2012 R2 (Server Core installation)"],"product":"Microsoft .NET Framework 3.5","vendor":"Microsoft","versions":[{"lessThan":"2.0.50727.9182 & 3.0.30729.9168","status":"affected","version":"3.5.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:36a1f09e6cded451f84c753a0eb39f093c129e0981eeb97b0adb5c9e0bc0c780 · sha256:b5e679e16573c759… · /containers/cna/affected/2

{"platforms":["Windows Server 2012","Windows Server 2012 (Server Core installation)","Windows Server 2012 R2","Windows Server 2012 R2 (Server Core installation)"],"product":"Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2","vendor":"Microsoft","versions":[{"lessThan":"4.7.4143.0","status":"affected","version":"4.7.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:36a1f09e6cded451f84c753a0eb39f093c129e0981eeb97b0adb5c9e0bc0c780 · sha256:b5e679e16573c759… · /containers/cna/affected/6

{"platforms":["Windows 10 Version 1809 for 32-bit Systems","Windows 10 Version 1809 for x64-based Systems","Windows 10 Version 21H2 for 32-bit Systems","Windows 10 Version 21H2 for ARM64-based Systems","Windows 10 Version 21H2 for x64-based Systems","Windows 10 Version 22H2 for 32-bit Systems","Windows 10 Version 22H2 for ARM64-based Systems","Windows 10 Version 22H2 for x64-based Systems","Windows Server 2019","Windows Server 2019 (Server Core installation)","Windows Server 2022","Windows Server 2022 (Server Core installation)"],"product":"Microsoft .NET Framework 3.5 AND 4.8","vendor":"Micro…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:36a1f09e6cded451f84c753a0eb39f093c129e0981eeb97b0adb5c9e0bc0c780 · sha256:b5e679e16573c759… · /containers/cna/affected/4

{"product":"Microsoft Visual Studio 2026 version 18.7","vendor":"Microsoft","versions":[{"lessThan":"18.7.4","status":"affected","version":"18.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:36a1f09e6cded451f84c753a0eb39f093c129e0981eeb97b0adb5c9e0bc0c780 · sha256:b5e679e16573c759… · /containers/cna/affected/9

{"platforms":["Windows 10 Version 21H2 for 32-bit Systems","Windows 10 Version 21H2 for ARM64-based Systems","Windows 10 Version 21H2 for x64-based Systems","Windows 10 Version 22H2 for 32-bit Systems","Windows 10 Version 22H2 for ARM64-based Systems","Windows 10 Version 22H2 for x64-based Systems","Windows 11 Version 23H2 for ARM64-based Systems","Windows 11 Version 23H2 for x64-based Systems","Windows 11 Version 24H2 for ARM64-based Systems","Windows 11 Version 24H2 for x64-based Systems","Windows 11 Version 25H2 for ARM64-based Systems","Windows 11 Version 25H2 for x64-based Systems","Windo…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:36a1f09e6cded451f84c753a0eb39f093c129e0981eeb97b0adb5c9e0bc0c780 · sha256:b5e679e16573c759… · /containers/cna/affected/5

{"platforms":["Windows 10 Version 1607 for 32-bit Systems","Windows 10 Version 1607 for x64-based Systems","Windows Server 2012","Windows Server 2012 (Server Core installation)","Windows Server 2012 R2","Windows Server 2012 R2 (Server Core installation)","Windows Server 2016","Windows Server 2016 (Server Core installation)"],"product":"Microsoft .NET Framework 4.8","vendor":"Microsoft","versions":[{"lessThan":"4.8.4803.0","status":"affected","version":"4.8.0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:36a1f09e6cded451f84c753a0eb39f093c129e0981eeb97b0adb5c9e0bc0c780 · sha256:b5e679e16573c759… · /containers/cna/affected/7

Affected products and versions

10 source assertions
{"product":".NET 8.0","vendor":"Microsoft","versions":[{"lessThan":"8.0.29","status":"affected","version":"8.0.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:36a1f09e6cded451f84c753a0eb39f093c129e0981eeb97b0adb5c9e0bc0c780 · sha256:b5e679e16573c759… · /containers/cna/affected/0
{"platforms":["Windows 10 Version 1607 for 32-bit Systems","Windows 10 Version 1607 for x64-based Systems","Windows 10 Version 1809 for 32-bit Systems","Windows 10 Version 1809 for x64-based Systems","Windows Server 2016","Windows Server 2016 (Server Core installation)","Windows Server 2019","Windows Server 2019 (Server Core installation)"],"product":"Microsoft .NET Framework 3.5 AND 4.7.2","vendor":"Microsoft","versions":[{"lessThan":"2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0","status":"affected","version":"4.7.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:36a1f09e6cded451f84c753a0eb39f093c129e0981eeb97b0adb5c9e0bc0c780 · sha256:b5e679e16573c759… · /containers/cna/affected/3
{"platforms":["Windows 11 Version 26H1 for ARM64-based Systems","Windows 11 version 26H1 for x64-based Systems"],"product":"Microsoft .NET Framework 4.8.1","vendor":"Microsoft","versions":[{"lessThan":"4.8.9340.0","status":"affected","version":"4.8.0.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:36a1f09e6cded451f84c753a0eb39f093c129e0981eeb97b0adb5c9e0bc0c780 · sha256:b5e679e16573c759… · /containers/cna/affected/8
{"product":".NET 9.0","vendor":"Microsoft","versions":[{"lessThan":"9.0.18","status":"affected","version":"9.0.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:36a1f09e6cded451f84c753a0eb39f093c129e0981eeb97b0adb5c9e0bc0c780 · sha256:b5e679e16573c759… · /containers/cna/affected/1
{"platforms":["Windows 11 Version 26H1 for ARM64-based Systems","Windows 11 version 26H1 for x64-based Systems","Windows Server 2012","Windows Server 2012 (Server Core installation)","Windows Server 2012 R2","Windows Server 2012 R2 (Server Core installation)"],"product":"Microsoft .NET Framework 3.5","vendor":"Microsoft","versions":[{"lessThan":"2.0.50727.9182 & 3.0.30729.9168","status":"affected","version":"3.5.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:36a1f09e6cded451f84c753a0eb39f093c129e0981eeb97b0adb5c9e0bc0c780 · sha256:b5e679e16573c759… · /containers/cna/affected/2
{"platforms":["Windows Server 2012","Windows Server 2012 (Server Core installation)","Windows Server 2012 R2","Windows Server 2012 R2 (Server Core installation)"],"product":"Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2","vendor":"Microsoft","versions":[{"lessThan":"4.7.4143.0","status":"affected","version":"4.7.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:36a1f09e6cded451f84c753a0eb39f093c129e0981eeb97b0adb5c9e0bc0c780 · sha256:b5e679e16573c759… · /containers/cna/affected/6
{"platforms":["Windows 10 Version 1809 for 32-bit Systems","Windows 10 Version 1809 for x64-based Systems","Windows 10 Version 21H2 for 32-bit Systems","Windows 10 Version 21H2 for ARM64-based Systems","Windows 10 Version 21H2 for x64-based Systems","Windows 10 Version 22H2 for 32-bit Systems","Windows 10 Version 22H2 for ARM64-based Systems","Windows 10 Version 22H2 for x64-based Systems","Windows Server 2019","Windows Server 2019 (Server Core installation)","Windows Server 2022","Windows Server 2022 (Server Core installation)"],"product":"Microsoft .NET Framework 3.5 AND 4.8","vendor":"Micro…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:36a1f09e6cded451f84c753a0eb39f093c129e0981eeb97b0adb5c9e0bc0c780 · sha256:b5e679e16573c759… · /containers/cna/affected/4
{"product":"Microsoft Visual Studio 2026 version 18.7","vendor":"Microsoft","versions":[{"lessThan":"18.7.4","status":"affected","version":"18.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:36a1f09e6cded451f84c753a0eb39f093c129e0981eeb97b0adb5c9e0bc0c780 · sha256:b5e679e16573c759… · /containers/cna/affected/9
{"platforms":["Windows 10 Version 21H2 for 32-bit Systems","Windows 10 Version 21H2 for ARM64-based Systems","Windows 10 Version 21H2 for x64-based Systems","Windows 10 Version 22H2 for 32-bit Systems","Windows 10 Version 22H2 for ARM64-based Systems","Windows 10 Version 22H2 for x64-based Systems","Windows 11 Version 23H2 for ARM64-based Systems","Windows 11 Version 23H2 for x64-based Systems","Windows 11 Version 24H2 for ARM64-based Systems","Windows 11 Version 24H2 for x64-based Systems","Windows 11 Version 25H2 for ARM64-based Systems","Windows 11 Version 25H2 for x64-based Systems","Windo…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:36a1f09e6cded451f84c753a0eb39f093c129e0981eeb97b0adb5c9e0bc0c780 · sha256:b5e679e16573c759… · /containers/cna/affected/5
{"platforms":["Windows 10 Version 1607 for 32-bit Systems","Windows 10 Version 1607 for x64-based Systems","Windows Server 2012","Windows Server 2012 (Server Core installation)","Windows Server 2012 R2","Windows Server 2012 R2 (Server Core installation)","Windows Server 2016","Windows Server 2016 (Server Core installation)"],"product":"Microsoft .NET Framework 4.8","vendor":"Microsoft","versions":[{"lessThan":"4.8.4803.0","status":"affected","version":"4.8.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:36a1f09e6cded451f84c753a0eb39f093c129e0981eeb97b0adb5c9e0bc0c780 · sha256:b5e679e16573c759… · /containers/cna/affected/7

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:36a1f09e6cded451f84c753a0eb39f093c129e0981eeb97b0adb5c9e0bc0c780 · sha256:b5e679e16573c759… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-502","description":"CWE-502: Deserialization of Untrusted Data","lang":"en-US","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:36a1f09e6cded451f84c753a0eb39f093c129e0981eeb97b0adb5c9e0bc0c780 · sha256:b5e679e16573c759… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":".NET Remote Code Execution Vulnerability","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50649"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:36a1f09e6cded451f84c753a0eb39f093c129e0981eeb97b0adb5c9e0bc0c780 · sha256:b5e679e16573c759… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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