What’s Vulnerable › Vulnerabilities

CVE-2019-1373

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 21.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-11-12 · updated 2026-06-17
• Weakness: CWE-502

Description

A remote code execution vulnerability exists in Microsoft Exchange through the deserialization of metadata via PowerShell, aka 'Microsoft Exchange Remote Code Execution Vulnerability'.

Affected products

• Microsoft Exchange Server: 2013-cumulative_update_23, 2016-cumulative_update_13, 2016-cumulative_update_14, 2019-cumulative_update_2, 2019-cumulative_update_3
• Microsoft Exchange Server 2013: Cumulative Update 23
• Microsoft Exchange Server 2016: Cumulative Update 13
• Microsoft Exchange Server 2016 Cumulative Update 14: all versions
• Microsoft Exchange Server 2019: Cumulative Update 2
• Microsoft Exchange Server 2019 Cumulative Update 3: all versions

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1373
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1373

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