Editor crash via oversized history range
Published Oct 27, 2023 · Updated Jun 23, 2026
Integer overflow in Vim 9.0.2067 and earlier allows local users to crash the editor through an oversized :history range argument. get_list_range stores parsed values as long integers but casts them through integer pointers without rejecting values above INT_MAX, leading to a use-after-free in ex_history. Exploitation requires executing a crafted Vim script or command locally; the documented consequence is a Vim process crash with no confidentiality or integrity impact.
Summary
What happened
Integer overflow in Vim 9.0.2067 and earlier allows local users to crash the editor through an oversized :history range argument. get_list_range stores parsed values as long integers but casts them through integer pointers without rejecting values above INT_MAX, leading to a use-after-free in ex_history. Exploitation requires executing a crafted Vim script or command locally; the documented consequence is a Vim process crash with no confidentiality or integrity impact.
The record
- CVE
- CVE-2023-46246
- Published
- Oct 27, 2023
- Updated
- Jun 23, 2026
- Vendor
- Vim
- Product
- Vim
- Classifications
- CWE-190, CWE-416, T1499.004
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 27, 2023CVE publishedPublication date reported by the CVE source.
- Jun 23, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=<= 9.0.2067
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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