Vulnerability 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 Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/retrage/advisories/blob/main/CVE-2025-61553/README.md
- https://sourceforge.net/p/bitvisor/code/ci/48090711ade5910b601d2b0034859a6a890cc
FAQ
What is CVE-2025-61553?
CVE-2025-61553 is a vulnerability with a CVSS score of 8.2 (HIGH). 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...
How severe is CVE-2025-61553?
CVE-2025-61553 has been rated HIGH with a CVSS base score of 8.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-61553?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.