CVE-2022-2183

What it actually does

Out-of-bounds read in Vim allowing unauthorized access to adjacent memory regions when processing crafted input.

Why it matters to the business

Developers and organizations using Vim face risk of information disclosure from memory contents or application crashes that interrupt editing and build workflows; low exploitability but widespread editor usage increases exposure surface.

How an attack unfolds

An attacker creates a malicious file or input that triggers the out-of-bounds read path in Vim's parser; when a victim opens the file in a vulnerable version the flaw is exercised, potentially leaking memory data or causing denial of service.

How to fix it

Upgrade vim/vim to commit 98056533b96b6b5d8849641de93185dd7bcadc44 or a later release that resolves the out-of-bounds read.

How to confirm the fix worked

Confirm installed Vim reports a version containing commit 98056533b96b6b5d8849641de93185dd7bcadc44; re-test with known triggering inputs to verify absence of crash or disclosure.

Typical attack path

1. Attacker crafts malicious input file exploiting the OOB read condition
2. Victim opens the file using vulnerable Vim instance
3. Vim performs out-of-bounds memory read during parsing
4. Attacker observes resulting memory disclosure or crash

How to detect it

Review application crash logs and core dumps for Vim segmentation faults or memory access violations when opening files; correlate with file open events from untrusted sources.

What your security team should do

• Immediately update all Vim installations to the fixed commit
• Inventory developer workstations and CI systems for vulnerable Vim versions
• Monitor editor crash reports and unusual memory access events
• Restrict opening of untrusted files in Vim until patched