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CVE-2020-16949

Microsoft Outlook Denial of Service Vulnerability

Published: Oct 16, 2020Updated: Feb 23, 2026 Sources: CVE List NVD BDUCWE-401
4.7CVSSMEDIUM

Description

<p>A denial of service vulnerability exists in Microsoft Outlook software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could cause a remote denial of service against a system.</p> <p>Exploitation of the vulnerability requires that a specially crafted email be sent to a vulnerable Outlook server.</p> <p>The security update addresses the vulnerability by correcting how Microsoft Outlook handles objects in memory.</p>

CVSS Vector Breakdown

AV:LAC:HPR:LUI:NS:UC:NI:NA:H
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High

Weaknesses

Affected Products

and 16 more affected products View all →

Exploitability

Official Patch Available

References

Timeline

Published
Oct 16, 2020
Last Updated
Feb 23, 2026

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