Microsoft Outlook Remote Code Execution Vulnerability

CVE-2025-62562 is a remote code execution vulnerability in Microsoft Office Outlook (rated Important, CVSS 7.8).

1 version

Facts

Microsoft id
CVE-2025-62562
Products
Microsoft Office Outlook
Severity
Important
Impact
Remote Code Execution
CVSS
7.8
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Unlikely
Customer action required
Yes
Release
2025-Dec
Assigned by
Microsoft
Weakness
CWE-416: Use After Free
MSRC revision
2.0
Status pages
Outlook status
First captured by us
(from our first import of this list)
Microsoft last modified
Source
Security updates · open the original at Microsoft

Microsoft's revision notes

  1. Revision 1.0, 2025-12-09: Information published.
  2. Revision 1.1, 2025-12-09: Corrected severity entries in the Affected Products table. This is an informational change only.
  3. Revision 2.0, 2025-12-17: Microsoft is announcing the availability of the security updates for Microsoft Office for Mac.

Microsoft says

Use after free in Microsoft Office Outlook allows an unauthorized attacker to execute code locally. Is the Preview Pane an attack vector for this vulnerability?

Security updates,

Read Microsoft's full post

What Microsoft changed

One version so far. If Microsoft edits it, each change shows here with what was removed and added.

  1. First version we captured ·

    The text as we first saw it

    Seen by us · Microsoft's timestamp · Microsoft's page

Other changes for Outlook