CVE-2019-1373
A remote code execution vulnerability exists in Microsoft Exchange through the deserialization of metadata via PowerShell, aka 'Microsoft…
- 9.8CriticalCVSS base score
- 21.7%Exploitation in 30 daysEPSS · top 2.3% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A remote code execution vulnerability exists in Microsoft Exchange through the deserialization of metadata via PowerShell, aka 'Microsoft Exchange Remote Code Execution Vulnerability'.
Timeline
ID reserved
By microsoft
- 12 months later
· 12 months later
Published
- 5 years later
· 5 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 21.7% · top 2.3% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
Microsoft · Microsoft Exchange Server 2019
- affected Cumulative Update 2
Microsoft · Microsoft Exchange Server 2016
- affected Cumulative Update 13
Microsoft · Microsoft Exchange Server 2013
- affected Cumulative Update 23
Microsoft · Microsoft Exchange Server 2019 Cumulative Update 3
- affected unspecified
Microsoft · Microsoft Exchange Server 2016 Cumulative Update 14
- affected unspecified
References
1
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1373 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2019-9930 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2019-1373)Record last updated .