Buffer Overflow Vulnerability in vim's xxd Component
CVE-2025-9390

4.8MEDIUM

Key Information:

Vendor

Vim

Status
Vim
Vendor
CVE Published:
24 August 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-9390?

A recently identified security flaw in vim impacts versions up to 9.1.1615, specifically within the main function of the xxd component, located in src/xxd/xxd.c. This vulnerability allows for buffer overflow, which can be exploited through local methods. An exploit has been made public, increasing the urgency for users to upgrade to version 9.1.1616 or later, where this issue has been addressed. Users are strongly advised to apply the patch identified as eeef7c77436a78cd27047b0f5fa6925d56de3cb0 to ensure their systems remain secure.

Affected Version(s)

vim 9.1.1615

vim 9.1.1616

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-9390 - Proof of Concept

References

https://vuldb.com/?id.321223
vdb-entrytechnical-description
https://vuldb.com/?ctiid.321223
signaturepermissions-required
https://vuldb.com/?submit.630903
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Xudong Cao
Meng Xu
nipc-cxd (VulDB User)
.
CVE-2025-9390 : Buffer Overflow Vulnerability in vim's xxd Component