Vulnerability · Published Feb 27, 2026 · Assigned by GitHub_M
CVE-2026-28421Vim has a heap-buffer-overflow and a segmentation fault
Medium 5.3
In plain English
A medium-severity improper input validation in vim from vim. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Vim is an open source, command line text editor. Versions prior to 9.2.0077 have a heap-buffer-overflow and a segmentation fault (SEGV) exist in Vim's swap file recovery logic. Both are caused by unvalidated fields read from crafted pointer blocks within a swap file. Version 9.2.0077 fixes the issue.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | vim-X11 | 2:8.0.1763-22.el8_10.1 | ALSA-2026:6915 |
| AlmaLinux:9 | vim-X11 | 2:8.2.2637-23.el9_7.2 | ALSA-2026:8259 |
| AlmaLinux:8 | vim-common | 2:8.0.1763-22.el8_10.1 | ALSA-2026:6915 |
| AlmaLinux:9 | vim-common | 2:8.2.2637-23.el9_7.2 | ALSA-2026:8259 |
| AlmaLinux:10 | vim-data | 2:9.1.083-6.el10_1.3 | ALSA-2026:7711 |
| AlmaLinux:8 | vim-enhanced | 2:8.0.1763-22.el8_10.1 | ALSA-2026:6915 |
| AlmaLinux:9 | vim-enhanced | 2:8.2.2637-23.el9_7.2 | ALSA-2026:8259 |
| AlmaLinux:10 | vim-filesystem | 2:9.1.083-6.el10_1.3 | ALSA-2026:7711 |
| AlmaLinux:8 | vim-filesystem | 2:8.0.1763-22.el8_10.1 | ALSA-2026:6915 |
| AlmaLinux:9 | vim-filesystem | 2:8.2.2637-23.el9_7.2 | ALSA-2026:8259 |
| AlmaLinux:8 | vim-minimal | 2:8.0.1763-22.el8_10.1 | ALSA-2026:6915 |
| AlmaLinux:9 | vim-minimal | 2:8.2.2637-23.el9_7.2 | ALSA-2026:8259 |
| Alpine:v3.23 | vim | 9.2.0078-r0 | ALPINE-CVE-2026-28421 |
| Alpine:v3.24 | vim | 9.2.0078-r0 | ALPINE-CVE-2026-28421 |
| Debian:12 | vim | no fix listed | DEBIAN-CVE-2026-28421 |
| Debian:13 | vim | 2:9.1.1230-2+deb13u1 | DEBIAN-CVE-2026-28421 |
| Debian:14 | vim | 2:9.2.0119-1 | DEBIAN-CVE-2026-28421 |
| Rocky Linux:10 | vim | 2:9.1.083-6.el10_1.3 | RLSA-2026:7711 |
| Rocky Linux:8 | vim | 2:8.0.1763-22.el8_10.1 | RLSA-2026:6915 |
| Rocky Linux:9 | vim | 2:8.2.2637-23.el9_7.2 | RLSA-2026:8259 |
| Ubuntu:22.04:LTS | vim | 2:8.2.3995-1ubuntu2.26 | UBUNTU-CVE-2026-28421 |
| Ubuntu:24.04:LTS | vim | 2:9.1.0016-1ubuntu7.10 | UBUNTU-CVE-2026-28421 |
| Ubuntu:25.10 | vim | 2:9.1.0967-1ubuntu6.1 | UBUNTU-CVE-2026-28421 |
| Ubuntu:26.04:LTS | vim | 2:9.1.2141-1ubuntu2 | UBUNTU-CVE-2026-28421 |
Affected products (as reported)
Weakness: CWE-20, CWE-122 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L