CVE-2026-50649
published 2026-07-14CVE-2026-50649: Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.
PriorityP348high7.8CVSS 3.1
AVLACLPRNUIRSUCHIHAH
EPSS
0.94%
56.9th percentile
Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.
Affected
9 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 < 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0 | 2.0.50727.9069 & 3.0.30729.9067 & 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_2026_version_18.7 | >= 18.0 < 18.7.4 | 18.7.4 |
| 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 |
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: Local code execution via deserialization of untrusted data
vendor_redhat·2026-07-14·CVSS 7.8
CVE-2026-50649 [HIGH] CWE-502 dotnet: .NET: Local code execution via deserialization of untrusted data
dotnet: .NET: Local code execution via deserialization of untrusted data
Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.
A flaw was found in .NET. This vulnerability allows an unauthorized attacker to execute code locally by exploiting a deserialization of untrusted data. This means that if an attacker can provide specially crafted data, the .NET application may process it in a way that leads to the execution of malicious code on the system where the application is running.
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 (Re
VulDB
Microsoft NET deserialization (Nessus ID 327692)
vuldb·2026-07-20·CVSS 7.8
CVE-2026-50649 [HIGH] Microsoft NET deserialization (Nessus ID 327692)
A vulnerability, which was classified as problematic, has been found in Microsoft NET. Affected by this issue is some unknown functionality. The manipulation leads to deserialization.
This vulnerability is referenced as CVE-2026-50649. The attack can only be performed from a local environment. No exploit is available.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-50649 dotnet8.0: .NET: Local code execution via deserialization of untrusted data [fedora-all]
bugzilla·2026-07-16·CVSS 7.8
CVE-2026-50649 [HIGH] CVE-2026-50649 dotnet8.0: .NET: Local code execution via deserialization of untrusted data [fedora-all]
CVE-2026-50649 dotnet8.0: .NET: Local code execution via deserialization of untrusted data [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.
Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.
Bugzilla
CVE-2026-50649 dotnet9.0: .NET: Local code execution via deserialization of untrusted data [fedora-all]
bugzilla·2026-07-16·CVSS 7.8
CVE-2026-50649 [HIGH] CVE-2026-50649 dotnet9.0: .NET: Local code execution via deserialization of untrusted data [fedora-all]
CVE-2026-50649 dotnet9.0: .NET: Local code execution via deserialization of untrusted data [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.
Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.
Bugzilla
CVE-2026-50649 dotnet10.0: .NET: Local code execution via deserialization of untrusted data [fedora-all]
bugzilla·2026-07-16·CVSS 7.8
CVE-2026-50649 [HIGH] CVE-2026-50649 dotnet10.0: .NET: Local code execution via deserialization of untrusted data [fedora-all]
CVE-2026-50649 dotnet10.0: .NET: Local code execution via deserialization of untrusted data [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.
Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.
Bugzilla
CVE-2026-50649 dotnet: .NET: Local code execution via deserialization of untrusted data
bugzilla·2026-07-14·CVSS 7.8
CVE-2026-50649 [HIGH] CVE-2026-50649 dotnet: .NET: Local code execution via deserialization of untrusted data
CVE-2026-50649 dotnet: .NET: Local code execution via deserialization of untrusted data
Deserialization of untrusted data in .NET 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