Stack-based Buffer Overflow in Bochs Affected by Vendor Vulnerability
CVE-2018-25220

9.3CRITICAL

Key Information:

Vendor

Bochs

Status
Bochs
Vendor
CVE Published:
28 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2018-25220?

Bochs versions 2.6 through 5 exhibit a stack-based buffer overflow vulnerability, enabling attackers to exploit the application by supplying an excessively large input string. By carefully crafting a payload that includes 1200 bytes of padding followed by a return-oriented programming chain, an attacker can successfully overwrite the instruction pointer. This exploitation allows the execution of arbitrary shell commands with the privileges of the application, posing a significant risk to systems utilizing affected versions of Bochs.

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Affected Version(s)

BOCHS 2.6-5

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-2018-25220 - Proof of Concept

References

https://www.exploit-db.com/exploits/43979
exploit
http://bochs.sourceforge.net/
product
https://www.vulncheck.com/advisories/bochs-5-buffer-overf...
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
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

Juan Sacco <jsacco@exploitpack.com> - http://exploitpack.com
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