SB2025071703 - Multiple vulnerabilities in VMware Fusion

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Main Vulnerability Database SB2025071703

SB2025071703 - Multiple vulnerabilities in VMware Fusion

Published: July 17, 2025

Security Bulletin ID SB2025071703
CSH Severity
High
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 25% Medium 75%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Integer overflow (CVE-ID: CVE-2025-41236)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows an attacker to compromise the host OS.

The vulnerability exists due to integer overflow in the VMXNET3 virtual network adapter. A malicious guest with administrative privileges can trigger an integer overflow and execute arbitrary code on the host OS.


2) Integer underflow (CVE-ID: CVE-2025-41237)

CWE-ID: CWE-191 - Integer underflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/VA:L/SC:H/SI:H/SA:H/E:U/U:Green


The vulnerability allows an attacker to compromise the affected host OS.

The vulnerability exists due to integer underflow in VMCI (Virtual Machine Communication Interface). A malicious guest with local administrative privileges on a virtual machine can trigger an integer underflow and execute arbitrary code as the virtual machine's VMX process running on the host.


3) Heap-based buffer overflow (CVE-ID: CVE-2025-41238)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:H/SI:H/SA:H/E:U/U:Green


The vulnerability allows an attacker to compromise the host OS.

The vulnerability exists due to a boundary error in the PVSCSI (Paravirtualized SCSI) controller. A malicious guest with local administrative privileges on a virtual machine can trigger a heap-based buffer overflow and execute arbitrary code as the virtual machine's VMX process running on the host.


4) Memory leak (CVE-ID: CVE-2025-41239)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:U/U:Green


The vulnerability allows an attacker to gain access to sensitive information.

The vulnerability exists due memory leak in vSockets. A malicious guest with local administrative privileges on a virtual machine can leak memory from processes communicating with vSockets.


Remediation

Install update from vendor's website.

References