CVE-2018-0940

Description

Microsoft Exchange Outlook Web Access (OWA) in Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 20, Microsoft Exchange Server 2013 Cumulative Update 18, Microsoft Exchange Server 2013 Cumulative Update 19, Microsoft Exchange Server 2013 Service Pack 1, Microsoft Exchange Server 2016 Cumulative Update 7, and Microsoft Exchange Server 2016 Cumulative Update 8 allows an elevation of privilege vulnerability due to how links in the body of an email message are rewritten, aka "Microsoft Exchange Elevation of Privilege Vulnerability".

6.5

CVSS

Severity: Medium

CVSS 3.0 •

CVSS 2.0 •

EPSS 8.58% Top 10%

Vendor Advisory microsoft.com

Affected: Microsoft Corporation Microsoft Exchange Outlook Web Access (OWA)

References

Link	Tags
http://www.securityfocus.com/bid/103323	third party advisory vdb entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0940	patch vendor advisory
http://www.securitytracker.com/id/1040521	third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2018-0940?: CVE-2018-0940 has been scored as a medium severity vulnerability.
How to fix CVE-2018-0940?: To fix CVE-2018-0940, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-0940 being actively exploited in the wild?: It is possible that CVE-2018-0940 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~9% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-0940?: CVE-2018-0940 affects Microsoft Corporation Microsoft Exchange Outlook Web Access (OWA).

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