CVE-2026-50646
published 2026-07-14CVE-2026-50646: Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.
PriorityP345high7.8CVSS 3.1
AVLACLPRNUIRSUCHIHAH
EPSS
0.97%
58.8th percentile
Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.
Affected
23 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | microsoft_net_framework_3.5 | >= 3.5.0 < 2.0.50727.8983 & 3.0.30729.8978 | 2.0.50727.8983 & 3.0.30729.8978 |
| microsoft | microsoft_net_framework_3.5_and_4.7.2 | >= 4.7.0 < 2.0.50727.8983 & 3.0.30729.8978 & 4.7.4143.0 | 2.0.50727.8983 & 3.0.30729.8978 & 4.7.4143.0 |
| microsoft | microsoft_net_framework_3.5_and_4.8 | >= 4.8.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0 | 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0 |
| microsoft | microsoft_net_framework_3.5_and_4.8.1 | >= 4.8.1 < 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0 | 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0 |
| microsoft | microsoft_net_framework_4.6.2_4.7_4.7.1_4.7.2 | >= 4.7.0 < 4.7.4143.0 | 4.7.4143.0 |
| microsoft | microsoft_net_framework_4.8 | >= 4.8.0 < 4.8.4803.0 | 4.8.4803.0 |
| microsoft | microsoft_visual_studio_2022_version_17.12 | >= 17.12.0 < 17.12.22 | 17.12.22 |
| microsoft | microsoft_visual_studio_2022_version_17.14 | >= 17.14.0 < 17.14.36 | 17.14.36 |
| microsoft | microsoft_visual_studio_2026_version_18.7 | >= 18.0 < 18.7.4 | 18.7.4 |
| microsoft | net | >= 8.0.0 < 8.0.29 | 8.0.29 |
| microsoft | net | >= 9.0.0 < 9.0.18 | 9.0.18 |
| microsoft | net_8.0 | >= 8.0.0 < 8.0.29 | 8.0.29 |
| microsoft | net_9.0 | >= 9.0.0 < 9.0.18 | 9.0.18 |
| microsoft | net_framework | — | — |
| microsoft | net_framework | — | — |
| microsoft | net_framework | — | — |
| microsoft | net_framework | — | — |
| microsoft | net_framework | — | — |
| microsoft | net_framework | — | — |
| microsoft | net_framework | — | — |
| microsoft | visual_studio_2022 | >= 17.12.0 < 17.12.22 | 17.12.22 |
| microsoft | visual_studio_2022 | >= 17.14.0 < 17.14.36 | 17.14.36 |
| microsoft | visual_studio_2026 | >= 18.7.0 < 18.7.4 | 18.7.4 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vendor_redhat7.8HIGH
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Red Hat
dotnet: .NET Framework: Local Code Execution via Protection Mechanism Failure
vendor_redhat·2026-07-14·CVSS 7.8
CVE-2026-50646 [HIGH] CWE-807 dotnet: .NET Framework: Local Code Execution via Protection Mechanism Failure
dotnet: .NET Framework: Local Code Execution via Protection Mechanism Failure
Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.
A flaw was found in .NET Framework. This protection mechanism failure allows an unauthorized attacker to execute arbitrary code locally. Successful exploitation of this vulnerability can lead to a complete compromise of the affected system.
Package: dotnet10.0 (Red Hat Enterprise Linux 10) - Affected
Package: dotnet8.0 (Red Hat Enterprise Linux 10) - Affected
Package: dotnet9.0 (Red Hat Enterprise Linux 10) - Affected
Package: dotnet10.0 (Red Hat Enterprise Linux 8) - Affected
Package: dotnet8.0 (Red Hat Enterprise Linux 8) - Affected
Package: dotnet9.0 (Red Hat Enterprise Linux 8) - Affected
Package:
VulDB
Microsoft .NET protection mechanism
vuldb·2026-07-15·CVSS 7.8
CVE-2026-50646 [HIGH] Microsoft .NET protection mechanism
A vulnerability, which was classified as problematic, has been found in Microsoft .NET. The impacted element is an unknown function. This manipulation causes protection mechanism failure.
This vulnerability is tracked as CVE-2026-50646. The attack is restricted to local execution. No exploit exists.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-50646 dotnet10.0: .NET Framework: Local Code Execution via Protection Mechanism Failure [fedora-all]
bugzilla·2026-07-16·CVSS 7.8
CVE-2026-50646 [HIGH] CVE-2026-50646 dotnet10.0: .NET Framework: Local Code Execution via Protection Mechanism Failure [fedora-all]
CVE-2026-50646 dotnet10.0: .NET Framework: Local Code Execution via Protection Mechanism Failure [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.
Bugzilla
CVE-2026-50646 dotnet8.0: .NET Framework: Local Code Execution via Protection Mechanism Failure [fedora-all]
bugzilla·2026-07-16·CVSS 7.8
CVE-2026-50646 [HIGH] CVE-2026-50646 dotnet8.0: .NET Framework: Local Code Execution via Protection Mechanism Failure [fedora-all]
CVE-2026-50646 dotnet8.0: .NET Framework: Local Code Execution via Protection Mechanism Failure [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.
Bugzilla
CVE-2026-50646 dotnet9.0: .NET Framework: Local Code Execution via Protection Mechanism Failure [fedora-all]
bugzilla·2026-07-16·CVSS 7.8
CVE-2026-50646 [HIGH] CVE-2026-50646 dotnet9.0: .NET Framework: Local Code Execution via Protection Mechanism Failure [fedora-all]
CVE-2026-50646 dotnet9.0: .NET Framework: Local Code Execution via Protection Mechanism Failure [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.
Bugzilla
CVE-2026-50646 dotnet: .NET Framework: Local Code Execution via Protection Mechanism Failure
bugzilla·2026-07-14·CVSS 7.8
CVE-2026-50646 [HIGH] CVE-2026-50646 dotnet: .NET Framework: Local Code Execution via Protection Mechanism Failure
CVE-2026-50646 dotnet: .NET Framework: Local Code Execution via Protection Mechanism Failure
Protection mechanism failure in .NET Framework allows an unauthorized attacker to execute code locally.
Rapid7
Patch Tuesday - July 2026
blogs_rapid7·2026-07-14·CVSS 9.6
CVE-2026-58617 [CRITICAL] Patch Tuesday - July 2026
Microsoft is publishing 622 vulnerabilities on July 2026 Patch Tuesday , including a record-breaking 416 Windows vulnerabilities. Microsoft is aware of exploitation in the wild for two of the vulnerabilities published today, both of which are listed on CISA KEV, as well as public disclosure for one other. As usual, browser vulns are not included in the Patch Tuesday count above. Rapid7 noted last month that Microsoft no longer enumerates Chromium CVEs in the Security Update Guide. However, Microsoft has now taken the pursuit of minimalism much further, since today’s Security Update Guide no longer lists out even Microsoft vulnerabilities! Instead, we now receive a summary table of vulnerability counts by product family, as well as a new slimline “Notable CVEs” section. All of this only ser
Sans Isc
Microsoft Patch Tuesday July 2026 - The AI Acopolypse is Here , (Tue, Jul 14th)
blogs_sans_isc·2026-07-14·CVSS 6.1
CVE-2026-56155 [MEDIUM] Microsoft Patch Tuesday July 2026 - The AI Acopolypse is Here , (Tue, Jul 14th)
Microsoft Patch Tuesday July 2026 - The AI Acopolypse is Here
Published: 2026-07-14. Last Updated: 2026-07-14 19:14:58 UTC
by Johannes Ullrich (Version: 1)
0 comment(s)
This patch Tuesday includes a staggering 622 vulnerabilities, not including another 427 vulnerabilities in Chromium, affecting Microsoft's Edge browser. 62 of the vulnerabilities are rated critical. One was disclosed before today, and two have already been exploited.
Given the large number of vulnerabilities, it is difficult to point out "noteworthy" issues.
Already exploited vulnerabilities:
CVE-2026-56155 : Active Directory Federation Services Elevation of Privilege Vulnerability. This is an important (not critical) vulnerablity.
CVE-2026-56164: Microsoft SharePoint Server Elevation of Privilege Vulnerability. Micr
2026-07-14
Published