CVE-2020-16949

MEDIUMCVSS 4.7/10EPSS 2.75%

Last modified

CVE-2020-16949 is a medium-severity vulnerability rated 4.7/10 on the CVSS scale. <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 estimates a 2.75% chance of exploitation in the next 30 days.

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>

Metrics

CVSS 3.1
4.7/10

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
2.75%

84.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
MicrosoftWindows 10All versions
MicrosoftWindows 101607
MicrosoftWindows 101709
MicrosoftWindows 101803
MicrosoftWindows 101809
MicrosoftWindows 101903
MicrosoftWindows 101909
MicrosoftWindows 102004
MicrosoftWindows 7All versionsSp1
MicrosoftWindows 8.1All versions
MicrosoftWindows Rt 8.1All versions
MicrosoftWindows Server 2008All versionsSp2
MicrosoftWindows Server 2008r2Sp1
MicrosoftWindows Server 2012All versions
MicrosoftWindows Server 2012r2
MicrosoftWindows Server 2016All versions
MicrosoftWindows Server 20161903
MicrosoftWindows Server 20161909
MicrosoftWindows Server 20162004
MicrosoftWindows Server 2019All versions
Microsoft365 AppsAll versions
MicrosoftOffice2019
MicrosoftOutlook2010Sp2
MicrosoftOutlook2013Sp1
MicrosoftOutlook2016

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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>
How severe is CVE-2020-16949?
CVE-2020-16949 has a CVSS score of 4.7/10 (MEDIUM severity). The EPSS model estimates a 2.75% probability of exploitation in the next 30 days.
How do I fix CVE-2020-16949?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-16949?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST