CVE-2026-42897
Microsoft Exchange Server Spoofing Vulnerability
At a glance Severity HIGH 8.1 Exploitation Known exploited (CISA KEV) · added 2026-05-15 Exploited per ENISA since 2026-05-15 EPSS EPSS 70.66 % · percentile 99 (2026-10-27) State PUBLISHED Published 2026-05-14 Updated 2026-08-10 Assigner microsoft NVD status Analyzed 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.
Scores Version Score Vector Scored by CVSS 3.1 HIGH 8.1 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 microsoft CVSS 3.1 HIGH 8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N NVD · secure@microsoft.com (Secondary) CVSS 3.1 MEDIUM 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N NVD · nvd@nist.gov (Primary)
Weaknesses (CWE)
European references
CERT-FR advisories
Affected configurations (NVD CPE) cpe:2.3:a:microsoft:exchange_server:2016:-:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_1:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_10:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_11:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_12:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_13:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_14:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_15:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_16:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_17:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_18:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_19:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_2:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_20:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_21:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_22:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_23:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_3:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_4:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_5:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_6:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_7:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_8:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_9:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:-:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_1:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_10:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_11:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_12:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_13:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_14:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_2:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_3:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_4:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_5:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_6:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_7:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_8:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_9:*:*:*:*:*:*cpe:2.3:a:microsoft:exchange_server_subscription_edition:*:*:*:*:*:*:*:* < 15.02.2562.043Affected products
References
Sources
