https://seclists.org/oss-sec/2026/q2/245: Xen Security Advisory 483 v2 (CVE-2026-23556) - oxenstod keeps quota lated use counts across domain destruction
Published Apr 28, 2026
·Updated
Affected Software
3 affected components
XEN Xen
XEN oxenstored (Ocaml xenstored)
XEN XAPI
Frequently Asked Questions
1
What is the severity of CVE-2026-23556?
CVE-2026-23556 has been rated as a high severity vulnerability.
2
How do I fix CVE-2026-23556?
To fix CVE-2026-23556, update to the latest patched version of Xen and oxenstored.
3
What impact does CVE-2026-23556 have on system security?
CVE-2026-23556 can lead to unauthorized access and resource misuse across domains.
4
Which versions of Xen are affected by CVE-2026-23556?
CVE-2026-23556 affects all versions of Xen prior to the fix in the latest release.
5
Is CVE-2026-23556 being actively exploited in the wild?
As of the advisory, there is no indication that CVE-2026-23556 is being actively exploited.