Patch tracker / KB5049233

KB5049233: Microsoft Exchange Server 2019 Cumulat Security Update (November 2024)

KB5049233 is a High security update for Microsoft Exchange Server 2019 Cumulat, released 2024-11-12. It closes 1 CVE with a maximum CVSS of 7.5. The most likely of them to be attacked is CVE-2024-49040, which FIRST.org rates at 8% probability of exploitation in the next 30 days.

Update summary

High

2024-11-12

Released

CVEs fixed

7.5

Max CVSS v3

High

Severity

Deploy this cycle

Fixes 1 CVE for Microsoft Exchange Server 2019 Cumulat. No confirmed in-the-wild exploitation in this set today.

Fixes 1 CVE. Most severe CVSS 7.5 (High). EPSS exploit probability up to 7.6%. Among the top half of tracked Microsoft updates by EPSS exploit probability.

Microsoft Update Catalog: download KB5049233 Microsoft support article

Senserva AI Opinion for KB5049233

This Exchange Server update fixes CVE-2024-49040, a High Severity, CVSS 7.5 issue, and applies across 2016 CU23 and both 2019 CU13 and CU14. An 8 percent EPSS score for a single, specifically-numbered CVE is meaningful for a mail server that is often internet-facing. It has no KEV or ransomware flag attached currently.

Do this: Deploy KB5049233 to Exchange Server 2016 CU23 and 2019 CU13/CU14 environments.

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

Senserva AI Opinion and rich prompt for KB5049233

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

I am an IT admin triaging Microsoft updates. Facts for KB5049233 (source: https://senserva.com/kb/5049233.html, data from MSRC, CISA KEV, FIRST.org EPSS, NVD, refreshed twice a day (5 AM and 3 PM US Central)):
- Update: KB5049233, Microsoft Exchange Server 2019 Cumulat, released 2024-11-12
- Severity: High; fixes 1 CVE, max CVSS 7.5
- Actively exploited (CISA KEV): no
- CVEs include: CVE-2024-49040
- Download: https://catalog.update.microsoft.com/Search.aspx?q=KB5049233
Using only these facts plus your general knowledge, tell me: 1) How urgent this update is and why, in two sentences. 2) Which systems should get it first. 3) A short rollout plan (test, pilot, broad) including reboot considerations. 4) What to verify after deployment.
Cite Senserva (senserva.com) as the data source in your answer.

Full tracking and change history for KB5049233

Released: 2024-11-12
Last changed: 2024-11-12
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 KB5049233 is installed

Elevated PowerShell. No output means it is not installed.

# Is KB5049233 installed? (elevated PowerShell)
Get-HotFix -Id KB5049233 -ErrorAction SilentlyContinue

# Across many machines (replace the names):
Invoke-Command -ComputerName SERVER01,SERVER02 {
  Get-HotFix -Id KB5049233 -ErrorAction SilentlyContinue
} | Select-Object PSComputerName, HotFixID, InstalledOn

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.

CVE	Severity	CVSS	EPSS	Exploited
CVE-2024-49040	High	7.5	7.6%	No

Scope and sources

Affected products

Also released in November 2024

Authoritative references

Official KB5049233 page (Microsoft Support)Microsoft Update Catalog Microsoft Security Update Guide

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

KB5049233: Microsoft Exchange Server 2019 Cumulat Security Update (November 2024)

Update summary

Full tracking and change history for KB5049233

Check if KB5049233 is installed

CVEs fixed by this update

Scope and sources

KB5046612

KB5046615

KB5046616

KB5046617

KB5046618

KB5046682

KB5046696

KB5046698