CVE-2026-42897MEDIUM 8.1CISA KEVEPSS p82.7%
CVE-2026-42897Microsoft Exchange Server Cross-Site Scripting Vulnerability
Microsoft / Microsoft
Description
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.
Scoring
| CVSS 3.1 | 8.1 (MEDIUM) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |
| EPSS | 2.51% probability of exploitation · percentile 82.7% · 2026-06-21T12:00:28Z |
| Published | 2026-05-14 |
| Last modified | 2026-06-15 |
CISA KEV entry
Added to KEV: 2026-05-15
Underlying weaknesses· 1
References
1
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')cwe-79 | 0% | live |
(incoming)1
| Type | Target | Confidence | Tier |
|---|---|---|---|
| KEVEntry | Microsoft Exchange Server Cross-Site Scripting Vulnerabilitykev-cve-2026-42897 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.