Microsoft Exchange Server Cross-Site Scripting Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 15/05/2026. Patch affected systems as an emergency.
| Package | Affected versions | Patched versions |
|---|---|---|
| exchange server | = 2016= 2019 | |
| exchange server subscription edition | < 15.02.2562.043 | 15.02.2562.043 |
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.
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