N-able Zero-Days, BroadWorks Exploitation, and the ClickFix Attack Chain

This episode examines three immediate threats facing UK small businesses in November 2026. First, zero-day vulnerabilities in N-able N-central, the remote monitoring platform used by many managed IT providers, created a window of exposure across entire MSP client bases before hotfixes became available. Second, CISA confirmed active exploitation of a Cisco BroadWorks authentication bypass, affecting business telephony infrastructure widely deployed across UK enterprises, often without their knowledge. Third, the ClickFix social engineering technique has matured from simple clipboard tricks into sophisticated attack chains combining malvertising, typosquatting, and engineered consent to deliver remote access trojans. The episode provides specific questions to ask IT and telephony providers, technical mitigations for PowerShell-based attacks, and staff briefing guidance. Also noted: the NCSC’s new Cyber Adversary Simulation scheme, Microsoft’s patch Tuesday addressing 1,328 vulnerabilities including 45 critical remote code execution flaws, and Maersk’s confirmation of a suspected data theft incident.

Chapters

• Introduction Mauven introduces three threat scenarios: vulnerabilities in the remote management tool used by IT providers, an actively exploited flaw in UK business phone infrastructure, and a social engineering attack that requires no technical vulnerability.
• N-able N-central Zero-Days: The Tool Your MSP Uses to Manage Your Systems Zero-day vulnerabilities disclosed in N-able N-central on 8-9 November created exposure across managed service provider client bases. Hotfixes released 11 November. Analysis of supply chain risk through MSP compromise, specific questions to ask providers about patch status and anomalous access monitoring.
• Call to Action Listener engagement request to follow the show and share with others who need these conversations with their IT providers.
• Cisco BroadWorks: CISA Confirms Active Exploitation CISA added a Cisco BroadWorks authentication bypass to its Known Exploited Vulnerabilities catalogue on 11 November, confirming in-the-wild attacks. Examination of BroadWorks deployment in UK business telephony, integration points with directory services, and questions to ask communications providers.
• ClickFix Has Grown Up: What Started as a Clipboard Trick Is Now a Full Attack Chain Evolution of the ClickFix social engineering technique from 2024 clipboard commands to sophisticated 2026 campaigns using malvertising, typosquatting, and fake verification prompts. Current payloads include remote access trojans and elaborate PowerShell scripts with animated progress indicators. Staff briefing guidance and technical mitigations through PowerShell execution policy and web filtering.
• Also Noted Today NCSC launches Cyber Adversary Simulation scheme. Microsoft November 2026 Patch Tuesday addresses 1,328 vulnerabilities including 60 critical and 45 remote code execution flaws. Fixes for Exchange Server sign-in and USB audio issues. Maersk confirms IT security incident investigation involving suspected data theft.
• Conclusion Three action items: contact IT provider about N-able N-central hotfixes, contact phone provider about BroadWorks patch status, brief staff on specific ClickFix attack mechanics.

Links

• https://www.ncsc.gov.uk/
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog
• https://www.huntress.com/
• https://blog.talosintelligence.com/