Highest advisory severityHigh 2 vendors · 2 advisories

CVE-2026-50649: .NET Remote Code Execution Vulnerability

Not in the CISA KEV catalog. High advisory severity (CVSS 7.8, MS Server).

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

NVD detail CVE.org

CVE-2026-50649 key facts

CISA KEV: Not listed (catalog checked Nov 6, 2026)
Highest advisory severity: High
CVSS base score: 7.8 (MS Server), 7.8 (Red Hat)
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H (Red Hat)
Weakness: CWE-502
Fixed releases: MS Server: KB5104032 (build 8.0.29), KB5104033 (build 9.0.18), KB5101014 (build 2.0.50727.9182 & 3.0.30729.9168), KB5101002 (build 4.8.9340.0), KB5101007 (build 4.8.4803.0), KB5101009 (build 4.8.4803.0) and 2 more in the advisory
Red Hat: dotnet8.0-0:8.0.129-1.el10_2, dotnet9.0-0:9.0.119-1.el10_2, dotnet10.0-0:10.0.110-1.el10_2, dotnet8.0-0:8.0.130-1.el10_0, dotnet9.0-0:9.0.120-1.el10_0, dotnet9.0-0:9.0.119-1.el8_10 and 27 more in the advisory
Vendor advisories: 2 from MS Server, Red Hat
VulniPulse record: Published Jul 16, 2026 · Updated Jul 31, 2026

Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2026-50649; bulletin-wide values are not repeated here.

Is CVE-2026-50649 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-50649 is not in the CISA KEV catalog (checked Nov 6, 2026) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-50649?

Upgrade to a fixed release named by the vendor:

MS Server: KB5104032 (build 8.0.29), KB5104033 (build 9.0.18), KB5101014 (build 2.0.50727.9182 & 3.0.30729.9168), KB5101002 (build 4.8.9340.0), KB5101007 (build 4.8.4803.0), KB5101009 (build 4.8.4803.0)
Red Hat: dotnet8.0-0:8.0.129-1.el10_2, dotnet9.0-0:9.0.119-1.el10_2, dotnet10.0-0:10.0.110-1.el10_2, dotnet8.0-0:8.0.130-1.el10_0, dotnet9.0-0:9.0.120-1.el10_0, dotnet9.0-0:9.0.119-1.el8_10

Install the applicable security update for your platform: KB5104032, KB5104033, KB5101014, KB5101002, KB5101007, KB5101009 (see the Microsoft Update Catalog). (MS Server)

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Vendor advisory comparison

MS Server

1 advisory

Advisory severityHigh7.8
High [CVE-2026-50649] .NET Remote Code Execution Vulnerability
CVE-2026-50649Source published Jul 14, 2026
.NET Remote Code Execution Vulnerability Affected products named by the advisory: Microsoft.NET Framework 4.8 on Windows Server 2016; Microsoft.NET Framework 4.8 on Windows Server 2012; Microsoft.NET Framework 4.8 on Windows Server 2012 R2; Microsoft.NET Framework 3.5 AND 4.8 on Windows Server 2019; and 4 more. Affected products named by the advisory: Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022; Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019; Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2016; Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012.
Affected products in this advisory
Microsoft .NET Framework 4.8 on Windows Server 2016
Microsoft .NET Framework 4.8 on Windows Server 2012 R2
Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019
Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022
3 more entries in the full advisory.
Source-reported affected versions
Affected-version details not available in this record.
Source-reported fixed versions
KB5104032 (build 8.0.29)
KB5104033 (build 9.0.18)
KB5101014 (build 2.0.50727.9182 & 3.0.30729.9168)
KB5101002 (build 4.8.9340.0)
4 more entries in the full advisory.
Mitigation guidance
Install the applicable security update for your platform: KB5104032, KB5104033, KB5101014, KB5101002, KB5101007, KB5101009 (see the Microsoft Update Catalog).
Full advisory and evidence Open source bulletin

Red Hat

1 advisory

Advisory severityHigh7.8
High [CVE-2026-50649] .NET: Local code execution via deserialization of untrusted data
CVE-2026-50649Source published Jul 14, 2026Source updated Jul 14, 2026
Deserialization of untrusted data in.NET allows an unauthorized attacker to execute code locally. A flaw was found in.NET. 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. Red Hat severity: Important — CVSS 7.8 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-502. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.6 Extended Update Support; Red Hat Hardened Images. Red Hat lists Red Hat Hardened Images; Red Hat…
Affected products in this advisory
Red Hat Enterprise Linux 10.0 Extended Update Support
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
Red Hat Enterprise Linux 9.6 Extended Update Support
4 more entries in the full advisory.
Source-reported affected versions
Affected-version details not available in this record.
Source-reported fixed versions
dotnet8.0-0:8.0.129-1.el10_2
dotnet9.0-0:9.0.119-1.el10_2
dotnet10.0-0:10.0.110-1.el10_2
dotnet8.0-0:8.0.130-1.el10_0
29 more entries in the full advisory.
Mitigation guidance
No mitigation guidance extracted; consult the source.
Full advisory and evidence Open source bulletin

All MS Server advisories

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