CVE-2025-27423: Improper Input Validation in Vim
Description
Vim is an open source, command line text editor. Vim is distributed with the tar.vim plugin, that allows easy editing and viewing of (compressed or uncompressed) tar files. Starting with 9.1.0858, the tar.vim plugin uses the ":read" ex command line to append below the cursor position, however the is not sanitized and is taken literally from the tar archive. This allows to execute shell commands via special crafted tar archives. Whether this really happens, depends on the shell being used ('shell' option, which is set using $SHELL). The issue has been fixed as of Vim patch v9.1.1164
Classification
CVE ID: CVE-2025-27423
CVSS Base Severity: HIGH
CVSS Base Score: 7.1
CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Problem Types
CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')Affected Products
Vendor: vim
Product: vim
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.06% (probability of being exploited)
EPSS Percentile: 17.07% (scored less or equal to compared to others)
EPSS Date: 2025-04-01 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2025-27423https://github.com/vim/vim/security/advisories/GHSA-wfmf-8626-q3r3
https://github.com/vim/vim/commit/129a8446d23cd9cb4445fcfea259cba5e0487d29
https://github.com/vim/vim/commit/334a13bff78aa0ad206bc436885f63e3a0bab399