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Vulnerability record · CVE-2026-73070 · published 11 August 2026

CVE-2026-73070: Vim stack-based buffer overflow vulnerability

Vim · Vim

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.

6.8 CVSS 4.0 Medium EPSS 0.19% · top 92.7% CWE-121 · Stack-based buffer overflow
6.8CVSS 4.0 base score
0.19%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
18 Sep 2026Last modified by NVD

Description

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/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/vim/vim/commit/5598618b2daf8e36b3bf0251caaefcf0bf8e85e4 Patch
https://github.com/vim/vim/releases/tag/v9.2.0842 ProductRelease Notes
https://github.com/vim/vim/security/advisories/GHSA-49m8-wwxj-mr69 PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2020-20703Vim classic buffer overflow vulnerabilityBuffer Overflow vulnerability in VIM v.8.1.2135 allows a remote attacker to execute arbitrary code via the operand parameter.EPSS 1.5%9.8CVE-2022-3520Vim heap-based buffer overflow vulnerabilityHeap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.0765.EPSS 1.0%9.8CVE-2022-0318Vim heap-based buffer overflow vulnerabilityHeap-based Buffer Overflow in vim/vim prior to 8.2.EPSS 2.0%9.8CVE-2017-6349Vim integer overflow vulnerabilityAn integer overflow at a u_read_undo memory allocation site would occur for vim before patch 8.0.0377, if it does not properly validate values for tr…EPSS 2.7%9.8CVE-2017-6350Vim integer overflow vulnerabilityAn integer overflow at an unserialize_uep memory allocation site would occur for vim before patch 8.0.0378, if it does not properly validate values f…EPSS 3.2%9.8CVE-2017-5953Vim integer overflow vulnerabilityvim before patch 8.0.0322 does not properly validate values for tree length when handling a spell file, which may result in an integer overflow at a …EPSS 2.8%9.3CVE-2008-6235Vim os command injection vulnerabilityThe Netrw plugin (netrw.vim) in Vim 7.0 and 7.1 allows user-assisted attackers to execute arbitrary commands via shell metacharacters in a filename u…EPSS 3.0%9.3CVE-2008-3074Tar.vim os command injection vulnerabilityThe shellescape function in Vim 7.0 through 7.2, including 7.2a.10, allows user-assisted attackers to execute arbitrary code via the "!" (exclamation…EPSS 3.8%

Source: NIST National Vulnerability Database (record CVE-2026-73070), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.