CVE Vulnerability Advisory Database
Filter vulnerabilities by CVSS severity, active CISA KEV exploitation, and technology stack.
Microsoft Exchange Server Elevation of Privilege and NTLM Relay Vulnerability (CVE-2024-21410) Urgent Security Advisory
[Affected Scope] Microsoft Exchange Server 2016 and 2019 environments where Cumulative Updates and Extended Protection are not enabled.
[Impact] Unauthenticated remote attackers can perform NTLM credential relay attacks to elevate privileges, gaining administrative access to Exchange servers and compromising mailboxes.
[Mitigation] Upgrade Exchange Server to the latest Cumulative Update (CU) and enforce the Extended Protection feature immediately.
Microsoft Outlook Remote NTLM Credential Theft & Elevation of Privilege Vulnerability (CVE-2023-23397) Critical Security Advisory
[Affected Scope] All supported desktop versions of Microsoft Outlook for Windows, including Outlook 2013, 2016, LTSC 2021, and Microsoft 365 Apps
[Impact] Attackers can trigger the vulnerability silently without user interaction (Zero-Click) simply by sending a malicious email, leaking the user's NTLM hash to external servers for NTLM relay attacks
[Mitigation] Apply the official Microsoft security updates immediately, block outbound SMB traffic (TCP port 445) at the perimeter, and run the Exchange audit script to purge malicious items