🚨 CVE-2026-73070
Vim is an open source, command line text editor. Prior to 9.2.0842, the socket server backend in src/socketserver.c accepts unbounded client connections in socketserver_accept(), causing descriptors to overflow fd_set structures in src/channel.c and fixed-size struct pollfd arrays in src/os_unix.c, which allows a local process that can connect to the server socket to corrupt stack memory or terminate the Vim server. This issue is fixed in version 9.2.0842.
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GitHub
patch 9.2.0842: [security]: stack buffer overflow in socket server · vim/vim@5598618
Problem: [security]: stack buffer overflow in socket server
(tdjackey)
Solution: Cap accepted socketserver clients (Yasuhiro Matsumoto)
Github Security Advisory:
https://github.com/vim/...
September 3, 2026 41
