CVE-2026-73073: Vim: Arbitrary Ex Command Execution in C Omni-Completion
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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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-73073
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-730730.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-73073 | coverage & exploitation status | NVD · CVE.org |
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