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CVE-2019-0858
A spoofing vulnerability exists in Microsoft Exchange Server when Outlook Web Access (OWA) fails to properly handle web requests, aka…
Medium6.1EPSS 2.1%
- Published
- Updated
- Reserved
- Assigned by
- microsoft
Description
A spoofing vulnerability exists in Microsoft Exchange Server when Outlook Web Access (OWA) fails to properly handle web requests, aka 'Microsoft Exchange Spoofing Vulnerability'. This CVE ID is unique from CVE-2019-0817.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 2.1% · top 18% of all CVEs (5 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.1.
Weakness
Affected products
Microsoft · Microsoft Exchange Server
- affected 2019
Microsoft · Microsoft Exchange Server 2016
- affected Cumulative Update 11
- affected Cumulative Update 12
Microsoft · Microsoft Exchange Server 2013
- affected Cumulative Update 22
Microsoft · Microsoft Exchange Server 2019
- affected Cumulative Update 1
References (1)
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0858 (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)
- 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://trackcve.app/cve/CVE-2019-0858)Record last updated .