CVE-2017-6349: Vim

Critical severity, CVSS 9.8. EPSS: 2.7% chance of exploitation in the next 30 days.

An integer overflow at a u_read_undo memory allocation site would occur for vim before patch 8.0.0377, if it does not properly validate values for tree length when reading a corrupted undo file, which may lead to resultant buffer overflows.

Affected products

• Vim Vim: up to and including 8.0.0376

Published 2017-02-27. Last modified 2026-06-17.