Patch tracker / KB5050526

KB5050526: PowerShell 7.5 installed on Linux Security Update (January 2025)

KB5050526 is a High security update for PowerShell 7.5 installed on Linux, released 2025-01-14. It closes 4 CVEs with a maximum CVSS of 8.8. The most likely of them to be attacked is CVE-2025-21176, which FIRST.org rates at 81% probability of exploitation in the next 30 days.

Update summary

High
2025-01-14
Released
4
CVEs fixed
8.8
Max CVSS
High
Severity
Deploy this cycle
Fixes 4 CVEs for PowerShell 7.5 installed on Linux. No confirmed in-the-wild exploitation in this set today.

Fixes 4 CVEs. Most severe CVSS 8.8 (High). EPSS exploit probability up to 2.4%. Among the lower half of tracked Microsoft updates by EPSS exploit probability.

Microsoft Update Catalog: download KB5050526Microsoft support article
Senserva AI Opinion for KB5050526

This January 2025 update fixes four CVEs in PowerShell 7.5 across Windows, Linux, and macOS installs, the worst rated High at CVSS 8.8. Cross-platform PowerShell deployments used for automation or remote management should be inventoried across all three operating systems, since the same fix set applies to each. EPSS is 2 percent with no KEV or ransomware flag.

Do this: Update PowerShell 7.5 on every Windows, Linux, and macOS host with KB5050526.

AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for KB5050526

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

Full tracking and change history for KB5050526

Released
2025-01-14
Last changed
2025-01-14
Changes tracked
1

Senserva began recording day-to-day change history on 2026-07-07, and refreshes it several times a day. Release dates are historical where Microsoft publishes them; revision history is tracked from that date forward, so it does not include changes made before then.

Check if KB5050526 is installed

Elevated PowerShell. No output means it is not installed.

CVEs fixed by this update

Sorted exploited-first, then by CVSS. Every CVE links to its Senserva page with the full risk facts, references, and a ready-to-paste AI prompt.

CVESeverityCVSSEPSSExploited
CVE-2025-21176High8.881%No
CVE-2025-21171High7.52.4%No
CVE-2025-21172High7.52.4%No
CVE-2025-21173High7.32.4%No

Scope and sources

Affected products
Also released in January 2025

KB5049981

121 CVEs · Critical · exploited

KB5049984

128 CVEs · Critical · exploited

KB5050009

128 CVEs · Critical · exploited

KB5050021

121 CVEs · Critical · exploited

KB5049983

122 CVEs · Critical

KB5049993

112 CVEs · Critical

KB5050004

93 CVEs · Critical

KB5050006

71 CVEs · Critical

The full month, summarized: Microsoft Patch Tuesday.

Authoritative references
Official KB5050526 page (Microsoft Support)Microsoft Update CatalogMicrosoft Security Update Guide

See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.

New to a term on this page? CVE, KB, KEV, CVSS, and EPSS are each explained once, on the Senserva security lexicon. Reference: Microsoft CVE and vulnerability management and the Microsoft patching guide.
Provided as is, without warranty; verify against the vendor advisory before acting. Data notice and terms.