Vulnerability Description
Vim is an open source, command line text editor. In versions from 9.1.1231 to before 9.1.1406, when processing nested tuples during Vim9 script import operations, an error during evaluation can trigger a double-free in Vim’s internal typed value (typval_T) management. Specifically, the clear_tv() function may attempt to free memory that has already been deallocated, due to improper lifetime handling in the handle_import / ex_import code paths. The vulnerability can only be triggered if a user explicitly opens and executes a specially crafted Vim script. This issue has been patched in version 9.1.1406.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Vim | Vim | >= 9.1.1231, < 9.1.1406 |
Related Weaknesses (CWE)
References
- https://github.com/vim/vim/commit/9772025d24e939fd84b85748ce35c26874c05775Patch
- https://github.com/vim/vim/releases/tag/v9.1.1406Patch
- https://github.com/vim/vim/security/advisories/GHSA-5fg8-wvx3-583xVendor Advisory
FAQ
What is CVE-2025-55158?
CVE-2025-55158 is a vulnerability with a CVSS score of 8.8 (HIGH). Vim is an open source, command line text editor. In versions from 9.1.1231 to before 9.1.1406, when processing nested tuples during Vim9 script import operations, an error during evaluation can trigge...
How severe is CVE-2025-55158?
CVE-2025-55158 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-55158?
Check the references section above for vendor advisories and patch information. Affected products include: Vim Vim.