XSS in Microsoft Exchange Server
CVE-2019-0858
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.021 (81.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
- Microsoft Exchange Server — versions 2013, 2016, 2019
- Microsoft Exchange Server — versions 2019
- Microsoft Exchange Server 2013 — versions Cumulative Update 22
- Microsoft Exchange Server 2016 — versions Cumulative Update 11, Cumulative Update 12
- Microsoft Exchange Server 2019 — versions Cumulative Update 1
Weakness classification (CWE)
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0858 (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2019-0858?
- CVE-2019-0858 is a medium-severity vulnerability in Microsoft Exchange Server, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-04-09.
- How severe is CVE-2019-0858?
- Medium severity. CVSS v3 base score is 6.1 out of 10.