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CVE-2026-59857 is an off-by-one out-of-bounds write in Vim versions prior to 9.2.0725. In the single-byte branch of the spell_soundfold_sal() function, SAL sound-folding output is written to a caller-owned buffer using a length guard that permits the result length to reach MAXWLEN. The subsequent NUL termination then writes one byte beyond the end of the MAXWLEN-element stack buffer. Processing a boundary-length word through soundfold(), or through sound-based spell suggestions, can corrupt the eval_soundfold() stack frame.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
25 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Vim denial-of-service vulnerability caused by an out-of-bounds write in spell sound-folding.
A vulnerability addressed by the Oracle Linux 10 Vim package security update; no technical flaw details are provided.
A vulnerability addressed by AlmaLinux advisory ALSA-2026:66348 for Vim packages.
A Vim denial-of-service vulnerability involving an out-of-bounds write in spell sound-folding processing.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.