CVE-2025-61553
HIGH
MEDIUM
Priority: 0.02
BB Relevance:
36/100
Published: 2025-10-16
Modified: 2026-11-05
First seen: 2026-11-05
Status: active
Attack Surface
Low Complexity
No Interaction
Conf. Impact
Integ. Impact
Scope Change
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
High
UI:
None
S:
Changed
C:
High
I:
High
A:
High
Description
An out-of-bounds write in VirtIO network device emulation in BitVisor from commit 108df6 (2020-05-20) to commit 480907 (2025-07-06) allows local attackers to cause a denial of service (host hypervisor crash) via a crafted PCI configuration space access. Given it's a heap overflow in a privileged hypervisor context, exploitation may enable arbitrary code execution or guest-to-host privilege escalation.