CVE-2026-79602highCWE-119

CVE-2026-79602: high-severity vulnerability in Xen

x86: improper handling of HVM emulation return codes

Published · Updated

Follow this CVE+ Monitor Xen+ Monitor xen

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.8epss 0.1%
A guest with a PCI device assigned that has at least a BAR on the IO port space can trigger a BUG() in Xen.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected products
Xen · Xen
Related CVEs — Xen

In the same product, most dangerous first.

CVE-2024-31142HIGHx86: Incorrect logic for BTC/SRSO mitigationsEPSS 17.4%CVE-2024-2201MEDIUMCVE-2024-2201EPSS 8.8%CVE-2023-46842MEDIUMx86 HVM hypercalls may trigger Xen bug checkEPSS 8.5%CVE-2024-2193MEDIUMSpeculative Race Condition impacts modern CPU architectures that support speculative execution, also known as GhostRace.EPSS 1.3%CVE-2025-1713HIGHdeadlock potential with VT-d and legacy PCI device pass-throughEPSS 0.9%CVE-2023-46839MEDIUMpci: phantom functions assigned to incorrect contextsEPSS 0.8%