CVE-2026-28420

A flaw was found in Vim. A remote attacker could exploit a heap-based buffer overflow and an out-of-bounds read vulnerability in Vim's terminal emulator. This occurs when processing specially crafted Unicode supplementary plane characters, potentially leading to information disclosure and denial of service.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.