PT-2025-42532 · Bitvisor · Bitvisor

Published 2025-10-16 · Updated 2025-10-17 · CVE-2025-61553

Positive Technologies (AI Summary)

CVSS v3.1

8.2

High

Base vector

AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions BitVisor versions commit 108df6 (2020-05-20) through commit 480907 (2025-07-06)

Description An out-of-bounds write in VirtIO network device emulation allows local attackers to cause a denial of service, potentially leading to a host hypervisor crash. Exploitation may enable arbitrary code execution or guest-to-host privilege escalation. The issue is a heap overflow occurring within a privileged hypervisor context, triggered by a crafted PCI configuration space access.

Recommendations Update BitVisor to a version after commit 480907 (2025-07-06).

Exploit

Fix

DoS

LPE

Memory Corruption

Heap Based Buffer Overflow

Weakness Enumeration

CWE-787

CWE-122

Related Identifiers

CVE-2025-61553

Affected Products

Bitvisor

References · 6

• 🔥 https://github.com/retrage/advisories/blob/main/CVE-2025-61553/README.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-61553 · Security Note
• https://t.me/CVEtracker/35145 · Telegram Post
• https://sourceforge.net/p/bitvisor/code/ci/48090711ade5910b601d2b0034859a6a890cc82d · Note
• https://twitter.com/CVEnew/status/1978932576548221184 · Twitter Post
• https://t.me/cveNotify/139136 · Telegram Post