CVE-2018-25220

Name: CVE-2018-25220
Creator: NVD / NIST
Published: 2026-03-28T12:16:02.6+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.3/10EPSS 0.64%

Last modified Jun 17, 2026

CVE-2018-25220 is a critical-severity vulnerability rated 9.3/10 on the CVSS scale. Bochs 2.6-5 contains a stack-based buffer overflow vulnerability that allows attackers to execute arbitrary code by supplying an oversized input string to the application. Attackers can craft a malicious payload with 1200 bytes of padding followed by a return-oriented programming chain to overwrite the instruction pointer and execute shell commands with application privileges.. EPSS estimates a 0.64% chance of exploitation in the next 30 days.

Description

Bochs 2.6-5 contains a stack-based buffer overflow vulnerability that allows attackers to execute arbitrary code by supplying an oversized input string to the application. Attackers can craft a malicious payload with 1200 bytes of padding followed by a return-oriented programming chain to overwrite the instruction pointer and execute shell commands with application privileges.

Metrics

CVSS 3.1

9.8/10

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

CVSS 4.0

9.3/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.64%

45.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Bochs Project	Bochs	2.6.5

References

http://bochs.sourceforge.net/Product
https://www.exploit-db.com/exploits/43979Exploit, VDB Entry
https://www.vulncheck.com/advisories/bochs-5-buffer-overflow-remote-code-executionThird Party Advisory

Timeline

Published: Mar 28, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2018-25220?

How severe is CVE-2018-25220?

CVE-2018-25220 has a CVSS score of 9.3/10 (CRITICAL severity). The EPSS model estimates a 0.64% probability of exploitation in the next 30 days.

How do I fix CVE-2018-25220?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-25220?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST