https://seclists.org/oss-sec/2026/q2/857: Xen Security Advisory 491 v2 (CVE-2026-42487) - x86 HVM I/O port list traversal
Published Jun 9, 2026
·Updated
Affected Software
1 affected component
Xen Project Xen>=3.2
Frequently Asked Questions
1
What is the severity of CVE-2026-42487?
CVE-2026-42487 has been categorized as a medium severity vulnerability.
2
How do I fix CVE-2026-42487?
To fix CVE-2026-42487, users should upgrade to the latest version of the Xen Project that addresses this vulnerability.
3
What systems are affected by CVE-2026-42487?
CVE-2026-42487 affects the x86 HVM guest environments running on Xen Project virtualization.
4
What is the impact of CVE-2026-42487?
The impact of CVE-2026-42487 is that it allows unauthorized access to I/O ports, potentially leading to data leakage or system manipulation.
5
When was CVE-2026-42487 published?
CVE-2026-42487 was published on June 9, 2026.