CVE-2017-8758

Name: CVE-2017-8758
Creator: NVD / NIST
Published: 2017-09-13T01:29:12.16+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 3.38%

Last modified Jun 17, 2026

CVE-2017-8758 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Microsoft Exchange Server 2016 allows an elevation of privilege vulnerability when Microsoft Exchange Outlook Web Access (OWA) fails to properly handle web requests, aka "Microsoft Exchange Cross-Site Scripting Vulnerability.". EPSS estimates a 3.38% chance of exploitation in the next 30 days.

Description

Microsoft Exchange Server 2016 allows an elevation of privilege vulnerability when Microsoft Exchange Outlook Web Access (OWA) fails to properly handle web requests, aka "Microsoft Exchange Cross-Site Scripting Vulnerability."

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

3.38%

87.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Microsoft	Exchange Server	2016

References

http://www.securityfocus.com/bid/100723Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039320Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8758Patch, Vendor Advisory
http://www.securityfocus.com/bid/100723Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039320Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8758Patch, Vendor Advisory

Timeline

Published: Sep 13, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-8758?

How severe is CVE-2017-8758?

CVE-2017-8758 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 3.38% probability of exploitation in the next 30 days.

How do I fix CVE-2017-8758?

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-2017-8758?

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

Scan your code now

Source: NVD / NIST