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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 bounded only by the trie structure itself; it is never checked against the size of the fixed MAXWLEN-element stack arrays it indexes (arridx[], curi[], wordcount[]). A crafted .spl/.sug file pair, loaded when the user invokes spell suggestion, can drive the des
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0bed777360d636bb845b1221c2238b0fa789980012fae752fbc5655d275e106e
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"vim","vendor":"vim","versions":[{"status":"affected","version":"< 9.2.0653"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:769583c6b50ac157b5b1cbf01017d91d77d51795e3cbf31dd2f0e0ee81047e7e · sha256:f1d6368783c8f6d7… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":5.7,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"ACTIVE","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:769583c6b50ac157b5b1cbf01017d91d77d51795e3cbf31dd2f0e0ee81047e7e · sha256:f1d6368783c8f6d7… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-787","description":"CWE-787: Out-of-bounds Write","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:769583c6b50ac157b5b1cbf01017d91d77d51795e3cbf31dd2f0e0ee81047e7e · sha256:f1d6368783c8f6d7… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/vim/vim/commit/a80874d9b84a01040e3d1aef2d4a59e1934dafb7","tags":["x_refsource_MISC"],"url":"https://github.com/vim/vim/commit/a80874d9b84a01040e3d1aef2d4a59e1934dafb7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:769583c6b50ac157b5b1cbf01017d91d77d51795e3cbf31dd2f0e0ee81047e7e · sha256:f1d6368783c8f6d7… · /containers/cna/references/1
{"name":"https://github.com/vim/vim/releases/tag/v9.2.0653","tags":["x_refsource_MISC"],"url":"https://github.com/vim/vim/releases/tag/v9.2.0653"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:769583c6b50ac157b5b1cbf01017d91d77d51795e3cbf31dd2f0e0ee81047e7e · sha256:f1d6368783c8f6d7… · /containers/cna/references/2
{"name":"https://github.com/vim/vim/security/advisories/GHSA-wgh4-64f7-q3jq","tags":["x_refsource_CONFIRM"],"url":"https://github.com/vim/vim/security/advisories/GHSA-wgh4-64f7-q3jq"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:769583c6b50ac157b5b1cbf01017d91d77d51795e3cbf31dd2f0e0ee81047e7e · sha256:f1d6368783c8f6d7… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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