CVE-2026-73070

Summary

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.

Affected Software

Weaknesses

• CWE-121: CWE-121: Stack-based Buffer Overflow

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://github.com/vim/vim/security/advisories/GHSA-49m8-wwxj-mr69
• https://github.com/vim/vim/commit/5598618b2daf8e36b3bf0251caaefcf0bf8e85e4
• https://github.com/vim/vim/releases/tag/v9.2.0842

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