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.

CVSS 4.0

6.8CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 8% of CVEs (scores of 2026-10-28)

CWE

CWE-121

Published

2026-08-11

Modified

2026-10-29

Record from

the NVD, synced 2026-10-29

Affected

• vim:vim

References

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

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