What is CVE-2026-70125?

CVE-2026-70125 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Microsoft Office Outlook Remote Code Execution Vulnerability

Which CVE IDs does CVE-2026-70125 cover?

CVE-2026-70125 covers the following CVE IDs: CVE-2026-70125. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-70125?

CVE-2026-70125 has a CVSS v3 base score of 8.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-70125?

CVE-2026-70125 affects 6 products, including: Microsoft 365 Apps for Enterprise for 32-bit Systems; Microsoft 365 Apps for Enterprise for 64-bit Systems; Microsoft Office LTSC 2021 for 32-bit editions; Microsoft Office LTSC 2021 for 64-bit editions; Microsoft Office LTSC 2024 for 32-bit editions; and others — see the full list on the advisory page.

CVE-2026-70125HighCVSS 8.8

Microsoft Office Outlook Remote Code Execution Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

September 23, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-70125 →

📋 Description

According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do? An attacker must send a user a malicious Office file and convince them to open it.

🎯 Affected products6

Microsoft 365 Apps for Enterprise for 32-bit Systems
Microsoft 365 Apps for Enterprise for 64-bit Systems
Microsoft Office LTSC 2021 for 32-bit editions
Microsoft Office LTSC 2021 for 64-bit editions
Microsoft Office LTSC 2024 for 32-bit editions
Microsoft Office LTSC 2024 for 64-bit editions

✅ Remediation

KBClick to Run (Security Update) — fixed build https://aka.ms/OfficeSecurityReleases

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70125
referencehttps://docs.microsoft.com/en-us/officeupdates/office365-proplus-security-updates