Patch tracker / KB5049994

KB5049994

Microsoft security update released 2025-01-14. Fixes 7 CVEs.

High

Download KB5049994

Get the official update for KB5049994. The download and file size for each supported product are on the Microsoft Update Catalog page.

Microsoft Update Catalog: download KB5049994 Microsoft support article

Update summary

Released

2025-01-14

CVEs fixed

7

Max CVSS

7.5

Severity

High

Exploitation and severity

Fixes 7 CVEs. Most severe CVSS 7.5 (High). EPSS exploit probability up to 4.4%.

Among the top half of tracked Microsoft updates by EPSS exploit probability.

What to do

Moderate priority: schedule it in your normal patch cycle. Senserva flags whether KB5049994 is missing on your devices.

CVEs fixed by this update

CVE-2025-21189 CVE-2025-21268 CVE-2025-21269 CVE-2025-21276 CVE-2025-21328 CVE-2025-21329 CVE-2025-21332

Affected products

Windows 10 Version 1809 for 32-bit Systems
Windows Server 2025
Windows Server 2025 (Server Core installation)

References

Microsoft support article Microsoft Security Update Guide

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

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Lexicon: the terms on this page

CVE: Common Vulnerabilities and Exposures. A unique ID for one publicly known vulnerability, such as CVE-2025-1234.
KB: Microsoft Knowledge Base article. The identifier for a specific Microsoft update.
KEV: CISA Known Exploited Vulnerabilities. CVEs confirmed exploited in the wild. Fix these first.
CVSS: Common Vulnerability Scoring System. A standardized Severity score from 0 to 10.
EPSS: Exploit Prediction Scoring System. The probability a CVE will be exploited in the next 30 days.
MSRC: Microsoft Security Response Center. Microsoft's Patch Tuesday advisories and KB-to-CVE mapping.
NVD: National Vulnerability Database (NIST). Authoritative CVE metadata and CVSS scores.
Ransomware: The vulnerability is linked to known ransomware activity.