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Huntress found ScreenConnect clients that write a four-stage VBScript chain onto machines as they connect, profile each host, and then request a different payload depending on how much RAM it has and which EDR is installed. There is no code execution vulnerability to patch — it abuses file transfer, and ConnectWise says the fix is to turn the permission off.
CVE-2026-86218 is a CVSS 10.0 pre-authentication RCE in N-central, patched in the fourth hotfix in five weeks. For two days the vendor's release notes and its incident notice said opposite things about whether it was being exploited. CISA added it to the KEV catalogue on 8 September with a three-day federal deadline.
Microsoft attributes StormEncryptor, a new C++ locker, to the China-linked group. Initial access was likely CVE-2026-18577 in N-able N-central, which is itself a bypass of the earlier fix. CISA has both flagged as exploited.