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CRITICAL
Vulnerabilities
CVE-2026-42897: Microsoft Exchange OWA XSS Zero-Day Under Attack
Active Zero-Day XSS vulnerability, CVE-2026-42897, impacts Microsoft Exchange OWA, allowing mailbox compromise. No patch available.
Runtime Rebel Intel
5 min read·May 19, 2026
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CRITICAL
Vulnerabilities
CVE-2024-49040: Microsoft Exchange Server Spoofing Vulnerability
Microsoft warns of CVE-2024-49040, a zero-day spoofing vulnerability in Exchange Server exploited to bypass security filters and impersonate trusted senders.
Runtime Rebel Intel
4 min read·May 15, 2026