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Vim < 9.2.0842 Stack-based Buffer Overflow (GHSA-49m8-wwxj-mr69)

medium Nessus Plugin ID 335165

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Synopsis

A text editor installed on the remote host is affected by a stack-based buffer overflow vulnerability.

Description

The version of Vim installed on the remote host is prior to 9.2.0842. It is, therefore, affected by a vulnerability as referenced in the GHSA-49m8-wwxj-mr69 advisory.

 - 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. (CVE-2026-73070)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Vim version 9.2.0842 or later.

See Also

https://github.com/vim/vim/security/advisories/GHSA-49m8-wwxj-mr69

Plugin Details

Severity: Medium

ID: 335165

File Name: vim_9_2_0842.nasl

Version: 1.5

Type: Local

Agent: windows, macosx, unix

Family: Misc.

Published: 8/13/2026

Updated: 9/21/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.58

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C

CVSS Score Source: CVE-2026-73070

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 6.8

Threat Score: 4.3

Threat Vector: CVSS:4.0/E:U

Vector: 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

Vulnerability Information

CPE: cpe:/a:vim:vim

Required KB Items: installed_sw/Vim

Exploit Ease: No known exploits are available

Patch Publication Date: 7/23/2026

Vulnerability Publication Date: 7/23/2026

Reference Information

CVE: CVE-2026-73070

CWE: 121

IAVA: 2026-A-0846