CVE-2026-73073
Vim is an open source, command line text editor. Prior to 9.2.0845, StructMembers() in runtime/autoload/ccomplete.vim constructs and executes a vimgrep command using an insufficiently escaped typeref: or typename: value from a tags file, allowing an unterminated collection followed by a command separator to execute arbitrary Ex and operating-system commands when a user invokes C omni-completion with CTRL-X CTRL-O on a member access whose type is resolved from that tags file. This issue is fixed in version 9.2.0845.
CSIRTS triage
- What
- C omni-completion in Vim can be exploited to execute arbitrary Ex commands.
- Who is affected
- Vim users with omni-completion enabled, particularly when editing untrusted C source files.
- Urgency
- Unknown severity; determine if this requires authentication or user interaction to exploit.
- Action
- Apply Vim updates and consider disabling C omni-completion if unavailable.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all EPSS-scored CVEs.
Advisory coverage (3)
- unknownUSN-8679-1: Vim vulnerabilityubuntu · 2026-08-25
- unknownCVE-2026-73073: Vim is an open source, command line text editor. Prior to 9.2.0845, StructMembers() in runtime…nvd · 2026-08-18
- unknownCVE-2026-73073: Vim: Arbitrary Ex Command Execution in C Omni-Completionmsrc · 2026-08-11
External references
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[](https://www.csirts.com/cve/CVE-2026-73073)