CVE-2025-61553 Memory corruption in n/a
Local attackers can crash the BitVisor hypervisor or potentially execute code via an out-of-bounds write in VirtIO network emulation.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-61553?
CVE-2025-61553 is a high-severity memory corruption vulnerability in n/a, published on 16 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.
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.
Which versions are affected by CVE-2025-61553?
How do I fix CVE-2025-61553?
No fix has been published for CVE-2025-61553 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-61553 being exploited?
There is no known exploitation of CVE-2025-61553 in the wild and no public exploit code.
Sources
Also known as GHSA-535q-qgjc-rq5r.