Microsoft PowerShell 7.4.x < 7.4.21 / 7.5.x < 7.5.12 / 7.6.x < 7.6.7 RCE (macOS)

high Nessus Plugin ID 366464

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Synopsis

The Microsoft PowerShell install on the remote macOS host is affected by a remote code execution vulnerability.

Description

The version of Microsoft PowerShell installed on the remote macOS host is 7.4.x prior to 7.4.21, 7.5.x prior to 7.5.12, or 7.6.x prior to 7.6.7. It is, therefore, affected by a remote code execution vulnerability. Reliance on untrusted inputs in a security decision in Microsoft PowerShell allows an unauthorized attacker to execute code over a network.

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

Solution

Upgrade to Microsoft PowerShell version 7.4.21, 7.5.12, 7.6.7, or later.

Plugin Details

Severity: High

ID: 366464

File Name: macos_microsoft_powershell_oct_2026.nasl

Version: 1.1

Type: Local

Agent: macosx

Family: MacOS X Local Security Checks

Published: 10/16/2026

Updated: 10/16/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.37

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-2026-96251

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:powershell, cpe:/o:apple:mac_os_x

Required KB Items: Host/MacOSX/Version, installed_sw/PowerShell

Patch Publication Date: 10/13/2026

Vulnerability Publication Date: 10/13/2026

Reference Information

CVE: CVE-2026-96251

IAVA: 2026-A-1131

Detections

Analytics