CVE-2026-33116 (GCVE-0-2026-33116)

Vulnerability from cvelistv5 – Published: 2026-04-14 16:57 – Updated: 2026-06-30 12:07
VLAI
Title
.NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
Summary
Loop with unreachable exit condition ('infinite loop') in .NET, .NET Framework, Visual Studio allows an unauthorized attacker to deny service over a network.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
  • CWE-400 - Uncontrolled Resource Consumption
  • CWE-20 - Improper Input Validation
  • CWE-776 - Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
Assigner
References
URL Tags
https://msrc.microsoft.com/update-guide/vulnerabi… vendor-advisorypatch
https://access.redhat.com/security/cve/CVE-2026-33116 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2457741 issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:13281 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:13280 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8467 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8470 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8472 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8473 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8468 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8475 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:13693 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:13283 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:13282 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8471 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8469 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8474 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:9077 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:9080 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:9205 vendor-advisoryx_refsource_REDHAT
Impacted products
Vendor Product Version
Microsoft .NET 10.0 Affected: 10.0.0 , < 10.0.6 (custom)
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Microsoft .NET 8.0 Affected: 8.0 , < 8.0.26 (custom)
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Microsoft .NET 8.0 Affected: 8.0.0 , < 8.0.26 (custom)
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Microsoft .NET 9.0 Affected: 9.0.0 , < 9.0.15 (custom)
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Microsoft Microsoft .NET Framework 3.5 Affected: 3.5.0 , < 2.0.50727.8982 & 3.0.30729.8976 (custom)
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Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 Affected: 4.7.0 , < 2.0.50727.9068 & 3.0.30729.9065 & 4.7.4141.0 (custom)
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Microsoft Microsoft .NET Framework 3.5 AND 4.8 Affected: 4.8.0 , < 2.0.50727.9068 & 3.0.30729.9065 & 4.8.4801.0 (custom)
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Microsoft Microsoft .NET Framework 3.5 AND 4.8.1 Affected: 4.8.1 , < 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 (custom)
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Microsoft Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 Affected: 4.7.0 , < 4.8.4801.0 (custom)
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Microsoft Microsoft .NET Framework 4.8 Affected: 4.8.0 , < 4.8.4801.0 (custom)
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Red Hat Red Hat Enterprise Linux AppStream EUS (v. 10.0)     cpe:/o:redhat:enterprise_linux_eus:10.0
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Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.1
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Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
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Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.4)     cpe:/a:redhat:rhel_eus:9.4::appstream
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Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
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Red Hat Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)     cpe:/o:redhat:enterprise_linux_eus:10.0
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Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)     cpe:/o:redhat:enterprise_linux:10.1
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Red Hat Red Hat Enterprise Linux CRB (v. 8)     cpe:/a:redhat:enterprise_linux:8::crb
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Red Hat Red Hat CodeReady Linux Builder EUS (v.9.4)     cpe:/a:redhat:rhel_eus:9.4::crb
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Red Hat Red Hat CodeReady Linux Builder EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::crb
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Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)     cpe:/a:redhat:enterprise_linux:9::crb
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Red Hat Red Hat Hardened Images     cpe:/a:redhat:hummingbird:1
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Date Public
2026-04-14 14:00
Show details on NVD website
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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\", \"Windows 11 Version 26H1 for ARM64-based Systems\", \"Windows 11 Version 26H1 for x64-based Systems\", \"Windows Server 2022\", \"Windows Server 2022 (Server Core installation)\", \"Windows Server 2022, 23H2 Edition (Server Core installation)\", \"Windows Server 2025\", \"Windows Server 2025 (Server Core installation)\"]}, {\"vendor\": \"Microsoft\", \"product\": \"Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.7.0\", \"lessThan\": \"4.8.4801.0\", \"versionType\": \"custom\"}], \"platforms\": [\"Windows Server 2012\", \"Windows Server 2012 (Server Core installation)\", \"Windows Server 2012 R2\", \"Windows Server 2012 R2 (Server Core installation)\"]}, {\"vendor\": \"Microsoft\", \"product\": \"Microsoft .NET Framework 4.8\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.8.0\", \"lessThan\": \"4.8.4801.0\", \"versionType\": \"custom\"}], \"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)\"]}], \"datePublic\": \"2026-04-14T14:00:00.000Z\", \"references\": [{\"url\": \"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33116\", \"name\": \".NET, .NET Framework, and Visual Studio Denial of Service Vulnerability\", \"tags\": [\"vendor-advisory\", \"patch\"]}], \"descriptions\": [{\"lang\": \"en-US\", \"value\": \"Loop with unreachable exit condition (\u0027infinite loop\u0027) in .NET, .NET Framework, Visual Studio allows an unauthorized attacker to deny service over a network.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en-US\", \"type\": \"CWE\", \"cweId\": \"CWE-835\", \"description\": \"CWE-835: Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)\"}, {\"lang\": \"en-US\", \"type\": \"CWE\", \"cweId\": \"CWE-400\", \"description\": \"CWE-400: Uncontrolled Resource Consumption\"}, {\"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\": \"10.0.6\", \"versionStartIncluding\": \"10.0.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"8.0.26\", \"versionStartIncluding\": \"8.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"8.0.26\", \"versionStartIncluding\": \"8.0.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"9.0.15\", \"versionStartIncluding\": \"9.0.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.8.4801.0\", \"versionStartIncluding\": \"4.8.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"2.0.50727.9068 \u0026 3.0.30729.9065 \u0026 4.8.4801.0\", \"versionStartIncluding\": \"4.8.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"2.0.50727.9068 \u0026 3.0.30729.9065 \u0026 4.7.4141.0\", \"versionStartIncluding\": \"4.7.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.8.4801.0\", \"versionStartIncluding\": \"4.7.0\"}, {\"criteria\": \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"2.0.50727.9181 \u0026 3.0.30729.9165 \u0026 4.8.9332.0\", \"versionStartIncluding\": \"4.8.1\"}, {\"criteria\": \"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"2.0.50727.8982 \u0026 3.0.30729.8976\", \"versionStartIncluding\": \"3.5.0\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"f38d906d-7342-40ea-92c1-6c4a2c6478c8\", \"shortName\": \"microsoft\", \"dateUpdated\": \"2026-06-19T16:08:09.958Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-33116\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-19T16:08:09.958Z\", \"dateReserved\": \"2026-03-17T20:15:23.721Z\", \"assignerOrgId\": \"f38d906d-7342-40ea-92c1-6c4a2c6478c8\", \"datePublished\": \"2026-04-14T16:57:47.626Z\", \"assignerShortName\": \"microsoft\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.