Detections
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RockyLinux 9 : .NET 8.0 (RLSA-2026:21293)

high Nessus Plugin ID 318040

Synopsis

The remote RockyLinux host is missing one or more security updates.

Description

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:21293 advisory.

 * serialize-javascript: serialize-javascript: Denial of Service via specially crafted array-like object serialization (CVE-2026-34043)

 * dotnet: .NET: infinite loop allows an attacker to cause a denial of service (CVE-2026-42899)

Tenable has extracted the preceding description block directly from the RockyLinux 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://errata.rockylinux.org/RLSA-2026:21293

https://bugzilla.redhat.com/show_bug.cgi?id=2453284

https://bugzilla.redhat.com/show_bug.cgi?id=2476605

Plugin Details

Severity: High

ID: 318040

File Name: rocky_linux_RLSA-2026-21293.nasl

Version: 1.1

Type: Local

Published: 5/30/2026

Updated: 5/30/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-42899

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS Score Source: CVE-2026-34043

Vulnerability Information

CPE: p-cpe:/a:rocky:linux:dotnet-runtime-dbg-8.0, p-cpe:/a:rocky:linux:dotnet-apphost-pack-8.0, p-cpe:/a:rocky:linux:dotnet-sdk-8.0-source-built-artifacts, p-cpe:/a:rocky:linux:dotnet-targeting-pack-8.0, p-cpe:/a:rocky:linux:aspnetcore-targeting-pack-8.0, p-cpe:/a:rocky:linux:dotnet-hostfxr-8.0-debuginfo, p-cpe:/a:rocky:linux:aspnetcore-runtime-dbg-8.0, p-cpe:/a:rocky:linux:aspnetcore-runtime-8.0, p-cpe:/a:rocky:linux:dotnet-templates-8.0, p-cpe:/a:rocky:linux:dotnet-sdk-8.0-debuginfo, p-cpe:/a:rocky:linux:dotnet8.0-debuginfo, cpe:/o:rocky:linux:9, p-cpe:/a:rocky:linux:dotnet-apphost-pack-8.0-debuginfo, p-cpe:/a:rocky:linux:dotnet-runtime-8.0-debuginfo, p-cpe:/a:rocky:linux:dotnet-sdk-8.0, p-cpe:/a:rocky:linux:dotnet8.0-debugsource, p-cpe:/a:rocky:linux:dotnet-hostfxr-8.0, p-cpe:/a:rocky:linux:dotnet-sdk-dbg-8.0, p-cpe:/a:rocky:linux:dotnet-runtime-8.0

Required KB Items: Host/local_checks_enabled, Host/RockyLinux/release, Host/RockyLinux/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 5/30/2026

Vulnerability Publication Date: 3/27/2026

Reference Information

CVE: CVE-2026-34043, CVE-2026-42899

IAVA: 2026-A-0460