High severity · published Aug 19, 2026
CVE-2026-43961
Vim: vimscript injection via unescaped filename in netrw s:netrwmarkfile() filter() expression allows arbitrary code execution
7.8
CVSS
0.2%
EPSS
No
On KEV
Description
A flaw was found in Vim's netrw plugin. A crafted filename containing quote characters and expression fragments can break out of the quoted context during mark/unmark operations, allowing arbitrary Vimscript execution. This can be leveraged to run shell commands with the privileges of the user running Vim.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat Enterprise Linux 10 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 6 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 7 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 8 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 9 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Hardened Images · Red Hat
All versions, or not specified · source: vendor
VI
vim · vim
before 9.2.0480 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-43961
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-43961
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:57614
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-43961
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2460434
github.com
https://github.com/vim/vim/security/advisories/GHSA-66hr-7p6x-x5j3
www.openwall.com
http://www.openwall.com/lists/oss-security/2026/05/14/7
More from Red Hat Enterprise Linux 10
7.8
CVE-2026-31431
crypto: algif_aead - Revert to operating out-of-place
7.5
CVE-2026-34486
Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptor
10.0
CVE-2026-46595
Invoking VerifiedPublicKeyCallback permissions skip enforcement in golang.org/x/crypto/ssh
10.0
CVE-2026-34078
Flatpak has a complete sandbox escape leading to host file access and code execution in the host context
9.8
CVE-2026-102560
Libsoup: libsoup: heap buffer overflow during outgoing permessage-deflate buffer growth