HIGHCVSS 8.1Actively exploited · CISA KEV since 2026-05-15Vulnerability
CVE-2026-42897
Microsoft Exchange Server contains a cross-site scripting vulnerability during web page generation in Outlook Web Access and when certain interaction conditions are met, arbitrary JavaScript can be executed in the browser context.
Properties
- Euvd product
- Microsoft Exchange Server Subscription Edition RTM, Microsoft Exchange Server 2016 Cumulative Update 23, Microsoft Exchange Server 2019 Cumulative Update 14, Microsoft Exchange Server 2019 Cumulative Update 15
- Vulnerability name
- Microsoft Exchange Server Cross-Site Scripting Vulnerability
- First seen
- 2026-08-10T15:14:02+00:00
- Cvss score
- 8.1
- Epss score
- 0.00519
- Last seen
- 2026-10-19T12:00:27+00:00
- Due date
- 2026-05-29
- Euvd assigner
- microsoft
- Retrieved at
- 2026-10-21T01:24:49+00:00
- Exploited euvd since
- 2026-05-15T00:00:00+00:00
- Src batch id
- epss_history-20261020T103617Z-728ddd
- Source url
- https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
- Date added
- 2026-05-15
- Score
- 8.1
- Euvd base score version
- 3.1
- Fetched at
- 2026-10-20T10:36:20+00:00
- Euvd vendor
- Microsoft
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
- In Signal since
- initial import (Sep 2026)
- Euvd base score
- 8.1
Related Entities (44 · showing 24)
AFFECTS_PRODUCT (40 · showing 20)
DESCRIBES (1)
HAS_WEAKNESS (1)
INVOLVES (1)
MENTIONED_IN (1)
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