Vulnerability in Microsoft 365 Apps
CVE-2020-16949
<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>
EPSS: 0.030 (86.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Microsoft 365_apps
- Microsoft 365 Apps For Enterprise — versions 16.0.1
- Microsoft Office 2019 — versions 19.0.0
- Microsoft Outlook 2010 Service Pack 2 — versions 13.0.0.0
- Microsoft Outlook 2013 Service Pack 1 — versions 15.0.0.0
- Microsoft Outlook 2016 — versions 16.0.0.0
- Microsoft Office — versions 2019
- Microsoft Outlook — versions 2010, 2013, 2016
- Microsoft Windows_10 — versions 1607, 1709, 1803
- Microsoft Windows_7
Weakness classification (CWE)
References
- secure@microsoft.com (Patch, x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-16949?
- CVE-2020-16949 is a medium-severity vulnerability in Microsoft 365 Apps, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 4.7/10. Published 2020-10-16.
- How severe is CVE-2020-16949?
- Medium severity. CVSS v3 base score is 4.7 out of 10.