CVE-2026-59119: PowerShell Elevation of Privilege Vulnerability

Overview

Severity

High (CVSS 7.3)

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Category

Elevation of Privilege

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2026-Aug

Released

2026-08-11

Description

Incorrect default permissions in Microsoft PowerShell allows an authorized attacker to elevate privileges locally.

FAQ

What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully exploited this vulnerability could gain SYSTEM privileges. According to the CVSS metric, user interaction is required (UI:R) and privileges required is Low (PR:L). What does that mean for this vulnerability? An authorized attacker with privileges could send controlled inputs to exploit this vulnerability.

Affected Products (3)

Developer Tools

• PowerShell 7.5
• PowerShell 7.4
• PowerShell 7.6

Acknowledgments

<a href="https://x.com/everping">Trung Nguyen</a> with <a href="https://cystack.net/">CyStack</a>

Revision History

• 2026-08-11: Information published.