Application crash via recursive tuple evaluation
Published Aug 11, 2025 · Updated Aug 12, 2025
Use-after-free in Vim 9.1.1231 through 9.1.1399 allows attackers to crash the editor via an explicitly executed Vim script. In eval9_nested_expr, an error from recursive eval1 evaluation is not returned immediately, so tuple cleanup can dereference already freed memory. The user must explicitly execute a script containing a nested recursive tuple expression; the grounded consequence is an application crash.
Summary
What happened
Use-after-free in Vim 9.1.1231 through 9.1.1399 allows attackers to crash the editor via an explicitly executed Vim script. In eval9_nested_expr, an error from recursive eval1 evaluation is not returned immediately, so tuple cleanup can dereference already freed memory. The user must explicitly execute a script containing a nested recursive tuple expression; the grounded consequence is an application crash.
The record
- CVE
- CVE-2025-55157
- Published
- Aug 11, 2025
- Updated
- Aug 12, 2025
- Vendor
- Vim
- Product
- Vim
- Classifications
- CWE-416, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 11, 2025CVE publishedPublication date reported by the CVE source.
- Aug 12, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=>= 9.1.1231, < 9.1.1400
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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