CVE-2026-42897
Microsoft Exchange Server Spoofing Vulnerability
Basic Information
- CVE State
- PUBLISHED
- Reserved Date
- April 30, 2026
- Published Date
- May 14, 2026
- Last Updated
- May 26, 2026
- Vendor
- Microsoft
- Product
- Microsoft Exchange Server 2016 Cumulative Update 23, Microsoft Exchange Server 2019 Cumulative Update 14, Microsoft Exchange Server 2019 Cumulative Update 15, Microsoft Exchange Server Subscription Edition RTM
- Description
- Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.
- Tags
- Exploitation
- active
- Technical Impact
- total
- Exploited in the Wild
- Yes (2026-06-01 13:29:03 UTC) Source
cisa
CVSS Scores
CVSS v3.1
8.1 - HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N/E:F/RL:O/RC:C
SSVC Information
Exploit Status
Known Exploited Vulnerability Information
| Source | Added Date |
|---|---|
| CVE | 2026-06-01 13:29:03 UTC |
Timeline
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CVE ID Reserved
-
CVE Published to Public
-
Added to KEVIntel