CVE-2025-61553
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.
SeverityHigh
CVSS8.2
Exploit probability—
ProductVirtIO network device emulation
PublishedOct 16, 2025
First seenOct 16, 2025
Weakness typeCWE-787Out-of-bounds writeCWE-122CWE-122
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| BitVisor VirtIO network device emulation | commit 108df6 ≤ v ≤ commit 480907 | — |
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