What’s Vulnerable › Vulnerabilities

CVE-2019-1233

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 6.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-09-11 · updated 2026-06-17

Description

A denial of service vulnerability exists in Microsoft Exchange Server software when the software fails to properly handle objects in memory, aka 'Microsoft Exchange Denial of Service 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-2019-1233
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1233

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