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Vulnerability record · CVE-2019-1373 · published 12 November 2019

CVE-2019-1373: Microsoft exchange server deserialization of untrusted data vulnerability

Microsoft · Exchange Server

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

9.8 CVSS 3.1 Critical EPSS 21% · top 2.5% CWE-502 · Deserialization of untrusted data
9.8CVSS 3.1 base score, v2 7.5
21%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

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

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2024-21410Microsoft Exchange Server improper authentication privilege escalationCVE-2024-21410 is an improper authentication (CWE-287) elevation of privilege flaw in Microsoft Exchange Server. It is network-reachable with no priv…KEVEPSS 13%analysed9.1CVE-2021-34473Microsoft Exchange Server SSRF Enables Remote Code ExecutionCVE-2021-34473 is a critical server-side request forgery (SSRF) flaw in Microsoft Exchange Server that leads to remote code execution. It is part of …KEVEPSS 100%analysed9.1CVE-2021-26855Microsoft Exchange Server SSRF enabling remote code executionCVE-2021-26855 is a server-side request forgery (CWE-918) in Microsoft Exchange Server that is part of the ProxyLogon exploit chain and can lead to r…KEVEPSS 100%analysed9.0CVE-2021-34523Microsoft Exchange Server privilege escalation flawCVE-2021-34523 is a privilege escalation vulnerability in Microsoft Exchange Server. It is a component of the ProxyShell exploit chain, where it is u…KEVEPSS 100%analysed8.8CVE-2023-21529Microsoft Exchange Server deserialization flaw enables remote code executionCVE-2023-21529 is a deserialization of untrusted data vulnerability (CWE-502) in Microsoft Exchange Server that allows remote code execution. It carr…KEVEPSS 59%analysed8.8CVE-2022-41080Microsoft Exchange Server elevation of privilegeCVE-2022-41080 is an elevation of privilege vulnerability in Microsoft Exchange Server. A network-reachable attacker with low privileges can exploit …KEVEPSS 77%analysed8.8CVE-2022-41040Microsoft Exchange Server SSRF elevation of privilegeCVE-2022-41040 is a server-side request forgery (SSRF) flaw in Microsoft Exchange Server that allows an authenticated attacker to escalate privileges…KEVEPSS 100%analysed8.8CVE-2021-42321Microsoft Exchange Server remote code execution flawCVE-2021-42321 is a remote code execution vulnerability in Microsoft Exchange Server. It is remotely reachable over the network with low complexity, …KEVEPSS 92%analysed

Source: NIST National Vulnerability Database (record CVE-2019-1373), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.