Detections
Analytics
RHEL 9 : .NET 8.0 (RHSA-2026:41894)
medium Nessus Plugin ID 329104
Synopsis
The remote Red Hat host is missing one or more security updates.Description
The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:41894 advisory..NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation.
New versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 8.0.129 and .NET Runtime 8.0.29.
Security Fix(es):
* dotnet: SocketsHttpHandler Http2Connection - HTTP/2 SETTINGS/PING ACK flood causing OOM (CVE-2026-50651)
* dotnet: .NET Core: Denial of Service via type confusion (CVE-2026-57108)
* ASP.NET Core: ASP.NET Core: Denial of Service via uncontrolled resource allocation (CVE-2026-56170)
* ASP.NET Core: ASP.NET Core: Privilege Escalation via Incorrect Authentication Algorithm (CVE-2026-47300)
* ASP.NET Core: ASP.NET Core: Privilege Elevation via Authentication Bypass (CVE-2026-47303)
* dotnet: .NET Security Feature Bypass Vulnerability (CVE-2026-47304)
* dotnet: .NET: Denial of Service vulnerability due to uncontrolled resource allocation (CVE-2026-47302)
* dotnet: .NET Framework: Privilege escalation via code injection (CVE-2026-50650)
* dotnet: .NET: Security feature bypass due to incorrect authorization (CVE-2026-50528)
* dotnet: .NET: Local code execution via deserialization of untrusted data (CVE-2026-50649)
* dotnet: .NET: Local tampering via improper link resolution (CVE-2026-50526)
* dotnet: .NET Framework: Local Code Execution via Protection Mechanism Failure (CVE-2026-50646)
* dotnet: .NET: Denial of Service due to uncontrolled resource allocation (CVE-2026-50525)
* dotnet: .NET Framework: Denial of Service via network-based buffer overflow (CVE-2026-50527)
* dotnet: .NET Framework: Remote Denial of Service due to uncontrolled resource allocation (CVE-2026-50648)
* .NET: .NET: Network Spoofing Vulnerability (CVE-2026-50659)
* dotnet: .NET Framework: Denial of Service via improper input validation (CVE-2026-50524)
Bug Fix(es) and Enhancement(s):
* Update .NET 8.0 to SDK 8.0.129 and Runtime 8.0.29 [rhel-9.8.z] (JIRA:RHEL-192467)
* dotnet8.0: Reduce time to detect hanging builds during .NET RPM builds (c9s) [rhel-9.8.z] (JIRA:RHEL-192337)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the affected packages.See Also
https://access.redhat.com/errata/RHSA-2026:41894
https://access.redhat.com/security/updates/classification/#important
https://bugzilla.redhat.com/show_bug.cgi?id=2499217
https://bugzilla.redhat.com/show_bug.cgi?id=2500109
https://bugzilla.redhat.com/show_bug.cgi?id=2500189
https://bugzilla.redhat.com/show_bug.cgi?id=2500492
https://bugzilla.redhat.com/show_bug.cgi?id=2500502
https://bugzilla.redhat.com/show_bug.cgi?id=2500509
https://bugzilla.redhat.com/show_bug.cgi?id=2500515
https://bugzilla.redhat.com/show_bug.cgi?id=2500556
https://bugzilla.redhat.com/show_bug.cgi?id=2500562
https://bugzilla.redhat.com/show_bug.cgi?id=2500563
https://bugzilla.redhat.com/show_bug.cgi?id=2500565
https://bugzilla.redhat.com/show_bug.cgi?id=2500577
https://bugzilla.redhat.com/show_bug.cgi?id=2500580
https://bugzilla.redhat.com/show_bug.cgi?id=2500581
https://bugzilla.redhat.com/show_bug.cgi?id=2500587
https://bugzilla.redhat.com/show_bug.cgi?id=2500589
Plugin Details
Severity: Medium
ID: 329104
File Name: redhat-RHSA-2026-41894.nasl
Version: 1.1
Type: Local
Agent: unix
Family: Red Hat Local Security Checks
Published: 7/23/2026
Updated: 7/23/2026
Supported Sensors: Nessus Agent, Continuous Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.9
Percentile: 58.12
Vendor
Vendor Severity: Important
CVSS v2
Risk Factor: Medium
Base Score: 4.6
Temporal Score: 3.4
Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:C/A:N
CVSS Score Source: CVE-2026-50526
CVSS v3
Risk Factor: Medium
Base Score: 5.5
Temporal Score: 4.8
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:redhat:enterprise_linux:9, cpe:/o:redhat:rhel_eus:9.8, p-cpe:/a:redhat:enterprise_linux:aspnetcore-runtime-8.0, p-cpe:/a:redhat:enterprise_linux:aspnetcore-runtime-dbg-8.0, p-cpe:/a:redhat:enterprise_linux:aspnetcore-targeting-pack-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet-apphost-pack-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet-hostfxr-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet-runtime-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet-runtime-dbg-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet-sdk-8.0-source-built-artifacts, p-cpe:/a:redhat:enterprise_linux:dotnet-sdk-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet-sdk-dbg-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet-targeting-pack-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet-templates-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet8.0
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 7/20/2026
Vulnerability Publication Date: 7/14/2026
Reference Information
CVE: CVE-2026-47300, CVE-2026-47302, CVE-2026-47303, CVE-2026-47304, CVE-2026-50524, CVE-2026-50525, CVE-2026-50526, CVE-2026-50527, CVE-2026-50528, CVE-2026-50646, CVE-2026-50648, CVE-2026-50649, CVE-2026-50650, CVE-2026-50651, CVE-2026-50659, CVE-2026-56170, CVE-2026-57108