Buffer overflow in Vim
CVE-2026-28422
Vim is an open source, command line text editor. Prior to version 9.2.0078, a stack-buffer-overflow occurs in `build_stl_str_hl()` when rendering a statusline with a multi-byte fill character on a very wide terminal. Version 9.2.0078 patches the issue.
Vulnerability class: Buffer Overflow
EPSS: 0.001 (3.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 2.2 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N.
Affected products
- Vim — versions < 9.2.0078
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Product, x_refsource_MISC)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2026-28422?
- CVE-2026-28422 is a low-severity vulnerability in Vim, classified under Stack-based Buffer Overflow. CVSS score: 2.2/10. Published 2026-02-27.
- How severe is CVE-2026-28422?
- Low severity. CVSS v3 base score is 2.2 out of 10.