Microsoft .NET Framework (October 2026)

high Nessus Plugin ID 366093

Synopsis

The Microsoft .NET Framework installation on the remote host is affected by multiple vulnerabilities.

Description

The Microsoft .NET Framework installation on the remote host is missing a security update. It is, therefore, affected by multiple vulnerabilities, including the following:

- Out-of-bounds write in .NET Framework allows an unauthorized attacker to execute code over a network.
(CVE-2026-70007)

- Deserialization of untrusted data in .NET Framework allows an unauthorized attacker to execute code over a network. (CVE-2026-70035)

- Improperly implemented security check for standard in .NET allows an unauthorized attacker to execute code over a network. (CVE-2026-70174)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Microsoft has released the following security updates to address these issues:
-KB5126868
-KB5127660
-KB5127664
-KB5127666
-KB5127667
-KB5127668
-KB5127683
-KB5127684
-KB5127685
-KB5127686
-KB5127687
-KB5127688
-KB5127689
-KB5127690
-KB5127691
-KB5127692
-KB5127693
-KB5127694
-KB5127696

Plugin Details

Severity: High

ID: 366093

File Name: smb_nt_ms26_oct_dotnet.nasl

Version: 1.1

Type: Local

Agent: windows

Family: Windows : Microsoft Bulletins

Published: 10/15/2026

Updated: 10/15/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 8

Percentile: 99.69

CVSS v2

Risk Factor: Critical

Base Score: 10

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

CVSS Score Source: CVE-2026-70007

CVSS v3

Risk Factor: High

Base Score: 8.8

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

Vulnerability Information

CPE: cpe:/a:microsoft:.net_framework

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Patch Publication Date: 10/13/2026

Vulnerability Publication Date: 10/13/2026

Reference Information

CVE: CVE-2026-102869, CVE-2026-108398, CVE-2026-58280, CVE-2026-69651, CVE-2026-70007, CVE-2026-70035, CVE-2026-70174, CVE-2026-83520, CVE-2026-84008, CVE-2026-85363, CVE-2026-96222, CVE-2026-96224, CVE-2026-96233, CVE-2026-96958, CVE-2026-96959, CVE-2026-96960, CVE-2026-97788, CVE-2026-97801

CWE: 1287, 190, 203, 295, 358, 405, 407, 426, 502, 674, 770, 787, 843

MSFT: MS26-5126868, MS26-5127660, MS26-5127664, MS26-5127666, MS26-5127667, MS26-5127668, MS26-5127683, MS26-5127684, MS26-5127685, MS26-5127686, MS26-5127687, MS26-5127688, MS26-5127689, MS26-5127690, MS26-5127691, MS26-5127692, MS26-5127693, MS26-5127694, MS26-5127696

MSKB: 5126868, 5127660, 5127664, 5127666, 5127667, 5127668, 5127683, 5127684, 5127685, 5127686, 5127687, 5127688, 5127689, 5127690, 5127691, 5127692, 5127693, 5127694, 5127696

Detections

Analytics