CVE-2025-9390: vim Buffer Overflow — Exploit & Fix

Description

A security flaw has been discovered in vim up to 9.1.1615. Affected by this vulnerability is the function main of the file src/xxd/xxd.c of the component xxd. The manipulation results in buffer overflow. The attack requires a local approach. The exploit has been released to the public and may be exploited. Upgrading to version 9.1.1616 addresses this issue. The patch is identified as eeef7c77436a78cd27047b0f5fa6925d56de3cb0. It is recommended to upgrade the affected component.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Weakness Type (CWE)

CWE-119 Buffer Overflow

CWE-120 CWE-120

Affected Products

Vendor	Product	Versions
vim	vim	9.1.1459 — 9.1.1616

References

Advisories & Patches

https://github.com/vim/vim/commit/eeef7c77436a78cd27047b0f5fa6925d56de3cb0 https://github.com/vim/vim/issues/17944 https://github.com/vim/vim/issues/17944

Exploits

https://drive.google.com/file/d/1JLnqrdcGsjUhbYzIEweXIGZyETjHlKtX/view?usp=sharing https://github.com/vim/vim/issues/17944 https://github.com/vim/vim/pull/17947 https://vuldb.com/?submit.630903 https://github.com/vim/vim/issues/17944 https://vuldb.com/?submit.630903

Other References

https://github.com/vim/vim/releases/tag/v9.1.1616 https://vuldb.com/?ctiid.321223 https://vuldb.com/?id.321223

Frequently Asked Questions

What is CVE-2025-9390? +

A security flaw has been discovered in vim up to 9.1.1615. Affected by this vulnerability is the function main of the file src/xxd/xxd.c of the component xxd. The manipulation results in buffer overflow. The attack requires a local approach. The exploit has been released to the public and may be exploited. Upgrading to version 9.1.1616 addresses this issue. The patch is identified as eeef7c77436a78cd27047b0f5fa6925d56de3cb0. It is recommended to upgrade the affected component. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2025-9390? +

CVE-2025-9390 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-9390? +

CVE-2025-9390 affects products from vim, specifically: vim. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-9390? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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