CVE-2026-57452

Summary

Vim is an open source, command line text editor. Prior to 9.2.0671, when Vim opens a file encrypted with the VimCrypt04! or VimCrypt05! method (xchacha20poly1305, requires the +sodium feature) whose body is shorter than a single libsodium secretstream header, an unsigned length calculation underflows and a subsequent decryption call reads far past the end of the input buffer, crashing Vim. This vulnerability is fixed in 9.2.0671.

Affected Software

Weaknesses

• CWE-125: CWE-125: Out-of-bounds Read
• CWE-191: CWE-191: Integer Underflow (Wrap or Wraparound)

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://github.com/vim/vim/security/advisories/GHSA-c4j9-wr9j-4486
• https://github.com/vim/vim/commit/c8777cec25dcfae89c42e9aff51af61f71c5745f
• https://github.com/vim/vim/releases/tag/v9.2.0671

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