CVE-2026-55892
mediumpriority · track · 0EPSS 0.001 · 2 %ileDEEUFRRUUSEPSS · scored 2026-10-23
Vim is an open source, command line text editor. Prior to 9.2.0662, the dump_prefixes() function in src/spell.c walks a spell-file prefix trie iteratively with a depth counter while dumping the prefixes that apply to a word. The counter is bounded only by the trie structure itself; it is never checked against the size of the fixed MAXWLEN-element stack arrays it indexes (prefix[], arridx[], curi[]). A crafted .spl file, loaded when the user dumps the word list, can drive the descent arbitrarily deep, so the function writes past the end of those arrays. This is a stack out-of-bounds write that corrupts the call frame and crashes the editor. This vulnerability is fixed in 9.2.0662.
cvss
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base score 0–10 · higher = more severe · hover a vector to decode
ssvc
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weaknesses
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affected products (31)
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advisories (2)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-1962vim: Mehrere SchwachstellenDeutsch2026-06-16csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in vim ausnutzen, um einen Denial of Service Angriff durchzuführen oder beliebigen Code auszuführen.
- CERTFR-2026-AVI-1336Multiples vulnérabilités dans les produits IBMFrançais2026-10-16vendor · certfrFR
also known as (4)
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sources
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references (10)
External citations — patches, advisories, analysis.
- https://github.com/vim/vim/commit/8325b193bba5f01e7a7d8241fcnnvd
- https://github.com/vim/vim/releases/tag/v9.2.0662cnnvd
- https://github.com/vim/vim/security/advisories/GHSA-qm9w-fmpj-879hcnnvd
- https://www.vim.org/download.phpPatchcnnvd
- https://github.com/vim/vim/commit/8325b193bba5f01e7a7d8241fenisa_euvd
- https://github.com/vim/vim/releases/tag/v9.2.0662enisa_euvd
- https://github.com/vim/vim/security/advisories/GHSA-qm9w-fmpj-879henisa_euvd
- https://github.com/vim/vim/commit/8325b193bba5f01e7a7d8241fPatchnvd
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