Vulnerability details

CVE-2025-61553

CVSS 3.1

8.2High

Official 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.

CVSS scores

Score	Version	Source	Vector
8.2High	3.1	CISA ADP / Vulnrichment (CISA-ADP)	`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
No product information recorded.

References and advisories

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Details

Published: 2025-10-16
Last updated: 2025-10-17
State: Published
Assigner (CNA): mitre

Exploit prediction (EPSS)

0.21%

Probability of exploitation in 30 days

11.2%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-787
Out-of-bounds Write
CWE-122
Heap-based Buffer Overflow