Security Digest - September 15, 2026

Daily security intelligence briefing for infrastructure and endpoint management teams. Consolidated from authoritative research, vendor advisories, and community discussions.

• Generated (UTC): 2026-09-15 17:51:01 +00:00
• Lookback window: 7 days

🚀 Top Research & Advisories

• No high-priority security research detected in this window.

  💻 AppSec

• CVE-2026-57099 - (NVD) Review .NET runtime vulnerabilities and apply patches.

🏗 Infrastructure

• CISA Shares 17 Techniques Used by Hackers to Compromise Active Directory Environments - (CybersecurityNews) Review server hardening and AD security posture.

• CVE-2026-56177 - (CVE.org) Review server hardening and AD security posture.

• CVE-2026-62762 - (NVD) Review server hardening and AD security posture.

🛡 Security Ops

• CrowdStrike CEO pushes back against AI slowdown calls - (Neowin) Review sensor guidance and deployment posture.

🛠 Infrastructure & Endpoint Control

• How are attackers actually using AI to attack websites? - (Reddit r/cybersecurity) Review security controls and policy updates.

• KB5129195 fails to fix secure domain logins broken by Windows 11 KB5124008 - (Neowin) Validate workstation security baseline and update compliance.

• Microsoft confirms KB5002914 Excel update breaks copy and paste - (BleepingComputer) Review Office update channel health and security baseline compliance.

• Microsoft has decided against killing an Outlook Classic feature after all - (Neowin) Review Office update channel health and security baseline compliance.

• New Outlook and Teams are getting a crucial feature, but Classic Outlook is being skipped - (Neowin) Review Office update channel health and security baseline compliance.

• Steam Vulnerability Found - (Reddit r/cybersecurity) Review security controls and policy updates.

🩹 Patch Tuesday & Update Experience

• KB5129195 fails to fix secure domain logins broken by Windows 11 KB5124008 - (Neowin) Admins have confirmed KB5129195 emergency update doesn't fix secure domain logins that were broken after Windows 11's KB5124008 update. Read more…

🔍 Quick Links (Watch Items)

• Steam Vulnerability Found - (Reddit r/cybersecurity)
• How to decide what career path I want ? - (Reddit r/cybersecurity)
• A very fun new game that teaches network intrusion methodology!! [AMA] I’m happy to chat!! - (Reddit r/cybersecurity)
• Apple Rolls Out Massive Security Update Fixing 273 Vulnerabilities Across Its Devices - (CybersecurityNews)
• Public cve’s - (Reddit r/cybersecurity)
• CISA Warns of Cisco Secure Email Gateway 0-Day Vulnerability Actively Exploited in Attacks - (CybersecurityNews)
• Homebrew 7.0.0 Adds Built-In Vulnerability Scanner and Stronger Package Sandboxing - (CybersecurityNews)
• cPanel LiteSpeed Web Server Vulnerability Allows Shared Server Users to Gain Root-Level Access - (CybersecurityNews)
• With everything going on with AI, I would like to know what we should do to prepare. - (Reddit r/cybersecurity)
• A problem with a shared hosting account - (Reddit r/cybersecurity)