SB2025071701 - Multiple vulnerabilities in VMware ESXi
Published: July 17, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Integer overflow (CVE-ID: CVE-2025-41236)
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)
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)
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)
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.