PT-2026-32729 · Microsoft+1 · Powershell+1

Surfingoldelephant · CVE-2026-26143 · Published 2026-04-14 · Updated 2026-07-09

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Microsoft PowerShell (affected versions not specified)

Description Improper input validation allows an unauthorized attacker to bypass a security feature locally.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2026-05659

BIT-POWERSHELL-2026-26143

CVE-2026-26143

Affected Products

Powershell

Red Os

References · 11

• https://osv.dev/vulnerability/CVE-2026-26143 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-26143 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26143 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-05659 · Security Note
• https://osv.dev/vulnerability/BIT-powershell-2026-26143 · Vendor Advisory
• https://twitter.com/0dayPublishing/status/2044776578731716815 · Twitter Post
• https://redos.red-soft.ru/search/?iblock_id=24&q=CVE-2026-26143 · Note
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti/uyazvimost-powershell-cve-2026-26143-7.3 · Note
• https://twitter.com/p0w3rsh3ll/status/2044131904706781189 · Twitter Post
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti-red-os-8-0/uyazvimost-powershell-cve-2026-26143-8.0 · Note
• https://twitter.com/CVEnew/status/2044358625838170360 · Twitter Post