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CVE-2020-1493

MEDIUMCVSS 5.5/10EPSS 7.30%

Last modified

CVE-2020-1493 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. An information disclosure vulnerability exists when attaching files to Outlook messages. This vulnerability could potentially allow users to share attached files such that they are accessible by anonymous users where they should be restricted to specific users. To exploit this vulnerability, an attacker would have to attach a file as a link to an email. EPSS estimates a 7.30% chance of exploitation in the next 30 days.

Description

An information disclosure vulnerability exists when attaching files to Outlook messages. This vulnerability could potentially allow users to share attached files such that they are accessible by anonymous users where they should be restricted to specific users. To exploit this vulnerability, an attacker would have to attach a file as a link to an email. The email could then be shared with individuals that should not have access to the files, ignoring the default organizational setting. The security update addresses the vulnerability by correcting how Outlook handles file attachment links.

Metrics

CVSS 3.1
5.5/10

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

EPSS Probability
7.30%

93.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
Microsoft365 AppsAll versions—
MicrosoftOffice2019—
MicrosoftOutlook2010Sp2
MicrosoftOutlook2013Sp1
MicrosoftOutlook2016—

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-1493?
An information disclosure vulnerability exists when attaching files to Outlook messages. This vulnerability could potentially allow users to share attached files such that they are accessible by anonymous users where they should be restricted to specific users. To exploit this vulnerability, an attacker would have to attach a file as a link to an email. The email could then be shared with individuals that should not have access to the files, ignoring the default organizational setting. The security update addresses the vulnerability by correcting how Outlook handles file attachment links.
How severe is CVE-2020-1493?
CVE-2020-1493 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 7.30% probability of exploitation in the next 30 days.
How do I fix CVE-2020-1493?
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-2020-1493?

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

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Source: NVD / NIST