CVE-2026-73070
MediumCVSS 6.8Summary
Vim, an open source command line text editor, prior to version 9.2.0842 has a vulnerability in the socket server backend in src/socketserver.c that accepts unbounded client connections, causing descriptors to overflow fd_set structures in src/channel.c and fixed-size struct pollfd arrays in src/os_unix.c. A local process that can connect to the server socket can corrupt stack memory or terminate the Vim server. This issue is fixed in version 9.2.0842.
Risk Assessment
Risk of memory corruption or Vim server crash, potentially leading to service disruption or code execution. The attack requires local access to the server socket.
Recommendation
Update Vim to version 9.2.0842 or later. Restrict access to the Vim server socket to trusted processes only.
Original NVD description (English source)
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.