Buffer overflow in Vim
CVE-2026-55693
Vim is an open source, command line text editor. Prior to 9.2.0653, the tree_count_words() function in src/spellfile.c fills in the word-count fields of a spell-file word trie by walking it iteratively with a depth counter. The counter is…
Vulnerability class: Buffer Overflow
EPSS: 0.001 (2.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Vim — versions < 9.2.0653
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Product, x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-55693?
- CVE-2026-55693 is a high-severity vulnerability in Vim, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2026-06-25.
- How severe is CVE-2026-55693?
- High severity. CVSS v3 base score is 7.8 out of 10.