Detections
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AlmaLinux 9 : .NET 8.0 (ALSA-2026:41894)
critical Nessus Plugin ID 331471
Synopsis
The remote AlmaLinux host is missing one or more security updates.Description
The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:41894 advisory.* 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 [almalinux-9.8.z] (JIRA:AlmaLinux-192467)
* dotnet8.0: Reduce time to detect hanging builds during .NET RPM builds (c9s) [almalinux-9.8.z] (JIRA:AlmaLinux-192337)
Tenable has extracted the preceding description block directly from the AlmaLinux 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
Plugin Details
Severity: Critical
ID: 331471
File Name: alma_linux_ALSA-2026-41894.nasl
Version: 1.1
Type: Local
Family: Alma Linux Local Security Checks
Published: 7/31/2026
Updated: 7/31/2026
Supported Sensors: Continuous Assessment, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.9
Percentile: 58.14
CVSS v2
Risk Factor: Critical
Base Score: 10
Temporal Score: 7.4
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2026-47304
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 8.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:alma:linux:9, cpe:/o:alma:linux:9::appstream, cpe:/o:alma:linux:9::baseos, cpe:/o:alma:linux:9::crb, cpe:/o:alma:linux:9::highavailability, cpe:/o:alma:linux:9::nfv, cpe:/o:alma:linux:9::realtime, cpe:/o:alma:linux:9::resilientstorage, cpe:/o:alma:linux:9::sap, cpe:/o:alma:linux:9::sap_hana, cpe:/o:alma:linux:9::supplementary, p-cpe:/a:alma:linux:aspnetcore-runtime-8.0, p-cpe:/a:alma:linux:aspnetcore-runtime-dbg-8.0, p-cpe:/a:alma:linux:aspnetcore-targeting-pack-8.0, p-cpe:/a:alma:linux:dotnet-apphost-pack-8.0, p-cpe:/a:alma:linux:dotnet-hostfxr-8.0, p-cpe:/a:alma:linux:dotnet-runtime-8.0, p-cpe:/a:alma:linux:dotnet-runtime-dbg-8.0, p-cpe:/a:alma:linux:dotnet-sdk-8.0-source-built-artifacts, p-cpe:/a:alma:linux:dotnet-sdk-8.0, p-cpe:/a:alma:linux:dotnet-sdk-dbg-8.0, p-cpe:/a:alma:linux:dotnet-targeting-pack-8.0, p-cpe:/a:alma:linux:dotnet-templates-8.0
Required KB Items: Host/local_checks_enabled, Host/AlmaLinux/release, Host/AlmaLinux/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