High
Security advisory
Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-50646
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 07:56 UTC · Revision 1
Source evidence
Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.
osv:CVE-2026-50646
Complete source record
{
"id": "7bffd35d266885bfa0fe84717a3f9ee178c4162c07464428d501637a5c9eebf2",
"url": "https://osv.dev/vulnerability/CVE-2026-50646",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2026-50646",
"summary": "Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.",
"evidence": "osv:CVE-2026-50646",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-50646",
"aliases": [
"BIT-dotnet-2026-50646",
"BIT-dotnet-sdk-2026-50646",
"CVE-2026-50646",
"GHSA-gh2h-rhph-h37g"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/dotnet/core",
"type": "GIT",
"events": [
{
"introduced": "d78b3180414d35d6c7d136db753474e2ae2b33df"
},
{
"fixed": "d74ed1d2ab9e03c721fa4b207e887480de9c81d5"
},
{
"introduced": "e18becd6171b8eb0eb4ec7ea8a0280cacfcee36b"
},
{
"fixed": "d74ed1d2ab9e03c721fa4b207e887480de9c81d5"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "8.0.0"
},
{
"fixed": "8.0.29"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "9.0.0"
},
{
"fixed": "9.0.18"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v9.0.17",
"v11.0.0-preview.5",
"v10.0.9",
"v8.0.28",
"v11.0.0-preview.4",
"v9.0.16",
"v8.0.27",
"v10.0.8",
"v10.0.7",
"v11.0.0-preview.3",
"v10.0.6",
"v9.0.15",
"v8.0.26",
"v10.0.5",
"v9.0.14",
"v8.0.25",
"v11.0.0-preview.2",
"v10.0.4",
"v11.0.0-preview.1",
"v9.0.13",
"v8.0.24",
"v10.0.3",
"v9.0.12",
"v8.0.23",
"v10.0.2",
"v10.0.1",
"v9.0.11",
"v8.0.22",
"v10.0.0",
"v9.0.10",
"v8.0.21",
"v10.0.0-rc.2",
"v9.0.9",
"v8.0.20",
"v10.0.0-rc.1",
"v10.0.0-preview.7",
"v9.0.8",
"v8.0.19",
"v10.0.0-preview.6",
"v9.0.7",
"v8.0.18",
"v9.0.6",
"v8.0.17",
"v10.0.0-preview.5",
"v9.0.5",
"v8.0.16",
"v10.0.0-preview.4",
"v10.0.0-preview.3",
"v9.0.4",
"v8.0.15",
"v10.0.0-preview.2",
"v9.0.3",
"v8.0.14",
"v10.0.0-preview.1",
"v9.0.2",
"v8.0.13",
"v9.0.1",
"v8.0.12",
"v9.0.0",
"v8.0.11",
"v6.0.36"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-50646.json"
}
}
],
"modified": "2026-10-30T02:30:37.333224929Z",
"provider": "osv",
"references": [
"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50646"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*"
],
"vendor_product": "microsoft:visual_studio_2022",
"extracted_events": [
{
"range": [
{
"introduced": "17.12.0"
},
{
"fixed": "17.12.22"
},
{
"introduced": "17.14.0"
},
{
"fixed": "17.14.36"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*"
],
"vendor_product": "microsoft:visual_studio_2026",
"extracted_events": [
{
"range": [
{
"introduced": "18.7.0"
},
{
"fixed": "18.7.4"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:4.8.1:*:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:*"
],
"vendor_product": "microsoft:.net_framework",
"extracted_events": [
{
"range": [
{
"introduced": "4.8"
},
{
"last_affected": "4.8"
},
{
"introduced": "4.6.2"
},
{
"last_affected": "4.6.2"
},
{
"introduced": "4.7"
},
{
"last_affected": "4.7"
},
{
"introduced": "4.7.1"
},
{
"last_affected": "4.7.1"
},
{
"introduced": "4.7.2"
},
{
"last_affected": "4.7.2"
},
{
"introduced": "3.5-NA"
},
{
"last_affected": "3.5-NA"
},
{
"introduced": "4.8.1"
},
{
"last_affected": "4.8.1"
},
{
"introduced": "3.5-NA"
},
{
"last_affected": "3.5-NA"
},
{
"introduced": "4.8"
},
{
"last_affected": "4.8"
},
{
"introduced": "3.5-NA"
},
{
"last_affected": "3.5-NA"
},
{
"introduced": "4.7.2"
},
{
"last_affected": "4.7.2"
},
{
"introduced": "3.5-NA"
},
{
"last_affected": "3.5-NA"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2026-50646",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 439594,
"published_at": "2026-07-14T20:17:37.67+00:00"
}