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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.

PUBLISHED Reserved 2026-03-28 | Published 2026-03-28 | Updated 2026-03-30 | Assigner VulnCheck




CRITICAL: 9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CRITICAL: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem types

Out-of-bounds Write

Product status

2.6-5
affected

Credits

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

References

www.exploit-db.com/exploits/43979 (ExploitDB-43979) exploit

bochs.sourceforge.net/ (Official Product Homepage) product

www.vulncheck.com/...5-buffer-overflow-remote-code-execution (VulnCheck Advisory: Bochs 2.6-5 Buffer Overflow Remote Code Execution) third-party-advisory

cve.org (CVE-2018-25220)

nvd.nist.gov (CVE-2018-25220)

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