#VU117432 Out-of-bounds write in Xen - CVE-2025-58147
Published: October 21, 2025
Vulnerability identifier: #VU117432
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-58147
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Xen
Xen
Software vendor:
Xen Project
Xen Project
Description
The vulnerability allows a malicious guest to escalate privileges on the system.
The vulnerability exists due to a boundary error within the vpmask_set() function when processing HV_VP_SET Sparse format. A malicious guest can initiate hypercall to trigger an out-of-bounds write and execute arbitrary code on the hypervisor.
Remediation
Install updates from vendor's website.