Beyond RC4 for Windows authentication
Microsoft outlined its transition plan to move away from RC4 for authentication and published guidance and tools to facilitate this change.
https://www.microsoft.com/en-us/windows-server/blog/2025/12/03/beyond-rc4-for-windows-authentication
FortiCloud SSO Login Vuln Exploited
Arctic Wolf observed exploit attempts against vulnerable FortiGate appliances.
https://arcticwolf.com/resources/blog/arctic-wolf-observes-malicious-sso-logins-following-disclosure-cve-2025-59718-cve-2025-59719/
FrePBX Vulnerability
Horizon3.ai identified three distinct vulnerabilities in FreePBX. In particular, the authentication by-pass issue should be of concern, but default FreePBX installs do not use the vulnerable web authentication feature.
https://horizon3.ai/attack-research/the-freepbx-rabbit-hole-cve-2025-66039-and-others/

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