CVE-2019-1266

Description

A spoofing vulnerability exists in Microsoft Exchange Server when Outlook Web App (OWA) fails to properly handle web requests, aka 'Microsoft Exchange Spoofing Vulnerability'.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.46%
Vendor Advisory microsoft.com
Affected: Microsoft Microsoft Exchange Server 2016
Affected: Microsoft Microsoft Exchange Server 2019
Published at:
Updated at:

References

Link Tags
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1266 patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-1266?
CVE-2019-1266 has been scored as a medium severity vulnerability.
How to fix CVE-2019-1266?
To fix CVE-2019-1266, 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-2019-1266 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-1266 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-1266?
CVE-2019-1266 affects Microsoft Microsoft Exchange Server 2016, Microsoft Microsoft Exchange Server 2019.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.