Out-of-bounds Read in Vim

CVE-2026-57454

Vim is an open source, command line text editor. From 9.2.0320 until 9.2.0679, a crafted undo or swap file can store a virtual-text property whose offset and length point outside the line's property data. When Vim restores or displays such a line it converts the offset into a pointer and reads the virtual text without bounds checking, causing an out-of-bounds read that can crash Vim or disclose adjacent heap memory. This vulnerability is fixed in 9.2.0679.

Vulnerability class: Buffer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H.

EPSS exploit prediction

EPSS: 0.002 (5.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 5.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-57454: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

  • Vim — versions >= 9.2.0320, < 9.2.0679

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-57454?
CVE-2026-57454 is a medium-severity vulnerability in Vim, classified under Out-of-bounds Read. CVSS score: 6.1/10. Published 2026-06-25.
How severe is CVE-2026-57454?
Medium severity. CVSS v3 base score is 6.1 out of 10.