CVE-2026-32177 (GCVE-0-2026-32177)

Vulnerability from cvelistv5 – Published: 2026-05-12 16:58 – Updated: 2026-05-13 17:58
VLAI?
Title
.NET Elevation of Privilege Vulnerability
Summary
Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.
CWE
  • CWE-122 - Heap-based Buffer Overflow
  • CWE-20 - Improper Input Validation
Assigner
References
Impacted products
Vendor Product Version
Microsoft .NET 10.0 Affected: 10.0.0 , < 10.0.8 (custom)
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Microsoft .NET 8.0 Affected: 8.0.0 , < 8.0.27 (custom)
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Microsoft .NET 9.0 Affected: 9.0.0 , < 9.0.16 (custom)
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Microsoft Microsoft .NET Framework 3.5 Affected: 3.5.0 , < 4.8.9334.0 and 4.8.4802.0 (custom)
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Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 Affected: 4.7.0 , < 4.8.9334.0 and 4.8.4802.0 (custom)
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Microsoft Microsoft .NET Framework 3.5 AND 4.8 Affected: 4.8.0 , < 4.8.9334.0 and 4.8.4802.0 (custom)
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Microsoft Microsoft .NET Framework 3.5 AND 4.8.1 Affected: 4.8.1 , < 4.8.9334.0 and 4.8.4802.0 (custom)
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Microsoft Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 Affected: 4.7.0 , < 4.8.9334.0 and 4.8.4802.0 (custom)
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Microsoft Microsoft .NET Framework 4.8 Affected: 4.8.0 , < 4.8.9334.0 and 4.8.4802.0 (custom)
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Microsoft Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8) Affected: 15.9.0 , < 15.9.80 (custom)
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Microsoft Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10) Affected: 16.11.0 , < 16.11.56 (custom)
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Microsoft Microsoft Visual Studio 2022 version 17.12 Affected: 17.12.0 , < 17.12.20 (custom)
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Microsoft Microsoft Visual Studio 2022 version 17.14 Affected: 17.14.0 , < 17.14.31 (custom)
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Microsoft Microsoft Visual Studio 2026 version 18.5 Affected: 18.5.0 , < 18.5.3 (custom)
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Date Public ?
2026-05-12 14:00
Show details on NVD website

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15.8)\", \"versions\": [{\"status\": \"affected\", \"version\": \"15.9.0\", \"lessThan\": \"15.9.80\", \"versionType\": \"custom\"}]}, {\"vendor\": \"Microsoft\", \"product\": \"Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10)\", \"versions\": [{\"status\": \"affected\", \"version\": \"16.11.0\", \"lessThan\": \"16.11.56\", \"versionType\": \"custom\"}]}, {\"vendor\": \"Microsoft\", \"product\": \"Microsoft Visual Studio 2022 version 17.12\", \"versions\": [{\"status\": \"affected\", \"version\": \"17.12.0\", \"lessThan\": \"17.12.20\", \"versionType\": \"custom\"}]}, {\"vendor\": \"Microsoft\", \"product\": \"Microsoft Visual Studio 2022 version 17.14\", \"versions\": [{\"status\": \"affected\", \"version\": \"17.14.0\", \"lessThan\": \"17.14.31\", \"versionType\": \"custom\"}]}, {\"vendor\": \"Microsoft\", \"product\": \"Microsoft Visual Studio 2026 version 18.5\", \"versions\": [{\"status\": \"affected\", \"version\": \"18.5.0\", \"lessThan\": \"18.5.3\", \"versionType\": \"custom\"}]}], \"datePublic\": \"2026-05-12T14:00:00.000Z\", \"references\": [{\"url\": \"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32177\", \"name\": \".NET Elevation of Privilege Vulnerability\", \"tags\": [\"vendor-advisory\", \"patch\"]}], \"descriptions\": [{\"lang\": \"en-US\", \"value\": \"Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en-US\", \"type\": \"CWE\", \"cweId\": \"CWE-122\", \"description\": \"CWE-122: Heap-based Buffer Overflow\"}, {\"lang\": \"en-US\", \"type\": \"CWE\", \"cweId\": \"CWE-20\", \"description\": \"CWE-20: Improper Input Validation\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"10.0.8\", \"versionStartIncluding\": \"10.0.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"8.0.27\", \"versionStartIncluding\": \"8.0.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"9.0.16\", \"versionStartIncluding\": \"9.0.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:visual_studio_2017:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"15.9.80\", \"versionStartIncluding\": \"15.9.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"16.11.56\", \"versionStartIncluding\": \"16.11.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"17.12.20\", \"versionStartIncluding\": \"17.12.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"17.14.31\", \"versionStartIncluding\": \"17.14.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"18.5.3\", \"versionStartIncluding\": \"18.5.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.8.9334.0 and 4.8.4802.0\", \"versionStartIncluding\": \"4.8.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.8.9334.0 and 4.8.4802.0\", \"versionStartIncluding\": \"4.8.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.8.9334.0 and 4.8.4802.0\", \"versionStartIncluding\": \"4.7.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.8.9334.0 and 4.8.4802.0\", \"versionStartIncluding\": \"4.7.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.8.9334.0 and 4.8.4802.0\", \"versionStartIncluding\": \"4.8.1\"}, {\"criteria\": \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.8.9334.0 and 4.8.4802.0\", \"versionStartIncluding\": \"3.5.0\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"f38d906d-7342-40ea-92c1-6c4a2c6478c8\", \"shortName\": \"microsoft\", \"dateUpdated\": \"2026-05-12T17:53:14.074Z\"}}, \"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-32177\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-05-13T03:55:57.172870Z\"}}}], \"providerMetadata\": {\"shortName\": \"CISA-ADP\", \"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"dateUpdated\": \"2026-05-13T10:02:59.786Z\"}}]}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-32177\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-12T17:53:14.074Z\", \"dateReserved\": \"2026-03-11T00:26:53.425Z\", \"assignerOrgId\": \"f38d906d-7342-40ea-92c1-6c4a2c6478c8\", \"datePublished\": \"2026-05-12T16:58:15.551Z\", \"assignerShortName\": \"microsoft\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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Detection rules are retrieved from Rulezet.

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