Heap-based Buffer Overflow Affecting vim/vim package, versions [,9.2.0076)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published28 Feb 2026
- disclosed28 Feb 2026
- creditKim Dong Han
Introduced: 28 Feb 2026
CVE-2026-28420 (opens in a new tab)How to fix?
Upgrade vim/vim to version 9.2.0076 or higher.
Overview
Affected versions of this package are vulnerable to Heap-based Buffer Overflow in the :terminal process when handling maximum combining characters from Unicode supplementary planes. An attacker can cause memory corruption or read sensitive memory contents by providing specially crafted input to the terminal emulator.