CVE-2025-1215

What it actually does

The vulnerability allows local attackers to trigger memory corruption in vim by supplying a specially crafted --log argument to src/main.c.

Why it matters to the business

Attackers with local access could crash the vim editor or potentially execute arbitrary code, disrupting developer workflows and requiring urgent updates across environments using the editor.

How an attack unfolds

A local attacker invokes vim with a manipulated --log argument that triggers memory corruption in the affected code path, potentially leading to process crash or code execution.

How to fix it

Upgrade vim to version 9.1.1097 or apply the patch at commit c5654b84480822817bb7b69ebc97c174c91185e9.

How to confirm the fix worked

Confirm the installed vim version is 9.1.1097 or later and verify the presence of commit c5654b84480822817bb7b69ebc97c174c91185e9 in the source.

Typical attack path

1. Identify local systems running vulnerable vim versions
2. Craft a command line supplying a malicious --log argument
3. Execute vim locally to trigger the memory corruption

How to detect it

Review command-line audit logs and process creation events for vim invocations containing unusual --log arguments; inspect system logs for associated memory errors or crashes.

What your security team should do

• Upgrade all vim installations to the fixed version immediately
• Review and restrict use of the --log flag in scripts and automation
• Monitor systems for unexpected vim process terminations