What’s Vulnerable › Vulnerabilities

CVE-2019-1266

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-09-11 · updated 2026-06-17
• Weakness: CWE-79

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'.

Affected products

• Microsoft Exchange Server: 2016-cumulative_update_12, 2016-cumulative_update_13, 2019-cumulative_update_1, 2019-cumulative_update_2
• Microsoft Exchange Server 2016: Cumulative Update 12, Cumulative Update 13
• Microsoft Exchange Server 2019: Cumulative Update 1, Cumulative Update 2

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1266
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1266

Get alerted when CVE-2019-1266 or the next vulnerability affects your stack