CVE-2018-8159

Name: CVE-2018-8159
Creator: NVD / NIST
Published: 2018-05-09T19:29:02.497+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.28%

Last modified Jun 17, 2026

CVE-2018-8159 is a vulnerability of currently unknown severity. An elevation of privilege vulnerability exists when Microsoft Exchange Outlook Web Access (OWA) fails to properly handle web requests, aka "Microsoft Exchange Elevation of Privilege Vulnerability." This affects Microsoft Exchange Server.. EPSS estimates a 3.28% chance of exploitation in the next 30 days.

Description

An elevation of privilege vulnerability exists when Microsoft Exchange Outlook Web Access (OWA) fails to properly handle web requests, aka "Microsoft Exchange Elevation of Privilege Vulnerability." This affects Microsoft Exchange Server.

Metrics

EPSS Probability

3.28%

86.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions	Update
Microsoft	Exchange Server	2013	Cumulative Update 19
Microsoft	Exchange Server	2016	Cumulative Update 8

References

http://www.securityfocus.com/bid/104056Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040850Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8159Patch, Vendor Advisory
http://www.securityfocus.com/bid/104056Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040850Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8159Patch, Vendor Advisory

Timeline

Published: May 9, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-8159?

How severe is CVE-2018-8159?

Severity scoring for CVE-2018-8159 is pending analysis. The EPSS model estimates a 3.28% probability of exploitation in the next 30 days.

How do I fix CVE-2018-8159?

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-2018-8159?

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

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Source: NVD / NIST