Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-43961
Vim: vimscript injection via unescaped filename in netrw s:netrwmarkfile() filter() expression allows arbitrary code execution
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L N R U H H H 7.8 .0022 11.4 —
AFFECTED
Product Versions Fixed
vim unspecified —
Red Hat Hardened Images unspecified 9.2.967-1.1.hum1
Red Hat Enterprise Linux 10 unspecified —
Red Hat Enterprise Linux 6 unspecified —
Red Hat Enterprise Linux 7 unspecified —
Red Hat Enterprise Linux 8 unspecified —
Red Hat Enterprise Linux 9 unspecified —
Red Hat OpenShift Container Platform 4 unspecified —
Red Hat OpenShift Container Platform 4 unspecified —
TIMELINE
May 4 Reserved by redhat
Aug 19 Published (CNA: redhat)
Sep 21 PATCH SHIPPED — CVE-2026-43961 (vim). Fixed in Red Hat Hardened Images 9.2.967-1.1.hum1.
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| May 4, 2026 | Reserved | Reserved by redhat |
| August 19, 2026 | Published | Published (CNA: redhat) |
| September 21, 2026 | PATCH SHIPPED | PATCH SHIPPED — CVE-2026-43961 (vim). Fixed in Red Hat Hardened Images 9.2.967-1.1.hum1. |
Affected
Affected products and packages — 9 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| vim | vim | — | — | — |
| Red Hat | Red Hat Hardened Images | — | — | 9.2.967-1.1.hum1 |
| Red Hat | Red Hat Enterprise Linux 10 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-43961 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
