MAESTRO Toolkit Exploiting VMware VM Escape Vulnerabilities

Cybersecurity researchers from Huntress detail a major VM Escape attack where hackers took over host servers. Using a secret toolkit called MAESTRO, the attackers stayed hidden for over a year. Read the exclusive details on how this breach was stopped and how to protect your network...

China-Linked Hackers Exploit VMware ESXi Zero-Days to Escape Virtual Machines

Chinese-speaking threat actors are suspected to have leveraged a compromised SonicWall VPN appliance as an initial access vector to deploy a VMware ESXi exploit that may have been developed as far back as February 2024. Cybersecurity firm Huntress, which observed the activity in December 2025 and...

CVE-2003-1291

VMware ESX Server 1.5.2 before Patch 4 allows local users to execute arbitrary programs as root via certain modified VMware ESX Server environment variables...

CVE-2021-22002

VMware Workspace ONE Access and Identity Manager, allow the /cfg web app and diagnostic endpoints, on port 8443, to be accessed via port 443 using a custom host header. A malicious actor with network access to port 443 could tamper with host headers to facilitate access to the /cfg web app, in...

CVE-2021-22055

The SchedulerServer in Vmware photon allows remote attackers to inject logs through \r in the package parameter. Attackers can also insert malicious data and fake entries...

CVE-2021-22040

VMware ESXi, Workstation, and Fusion contain a use-after-free vulnerability in the XHCI USB controller. A malicious actor with local administrative privileges on a virtual machine may exploit this issue to execute code as the virtual machine's VMX process running on the host...

CVE-2021-22057

VMware Workspace ONE Access 21.08, 20.10.0.1, and 20.10 contain an authentication bypass vulnerability. A malicious actor, who has successfully provided first-factor authentication, may be able to obtain second-factor authentication provided by VMware Verify...

CVE-2021-22000

VMware Thinapp version 5.x prior to 5.2.10 contain a DLL hijacking vulnerability due to insecure loading of DLLs. A malicious actor with non-administrative privileges may exploit this vulnerability to elevate privileges to administrator level on the Windows operating system having VMware ThinApp...

CVE-2021-22041

VMware ESXi, Workstation, and Fusion contain a double-fetch vulnerability in the UHCI USB controller. A malicious actor with local administrative privileges on a virtual machine may exploit this issue to execute code as the virtual machine's VMX process running on the host...

CVE-2021-22036

VMware vRealize Orchestrator 8.x prior to 8.6 contains an open redirect vulnerability due to improper path handling. A malicious actor may be able to redirect victim to an attacker controlled domain due to improper path handling in vRealize Orchestrator leading to sensitive information disclosure...

CVE-2021-22054

VMware Workspace ONE UEM console 20.0.8 prior to 20.0.8.37, 20.11.0 prior to 20.11.0.40, 21.2.0 prior to 21.2.0.27, and 21.5.0 prior to 21.5.0.37 contain an SSRF vulnerability. This issue may allow a malicious actor with network access to UEM to send their requests without authentication and to...

CVE-2021-22018

The vCenter Server contains an arbitrary file deletion vulnerability in a VMware vSphere Life-cycle Manager plug-in. A malicious actor with network access to port 9087 on vCenter Server may exploit this issue to delete non critical files...

CVE-2021-22045

VMware ESXi 7.0, 6.7 before ESXi670-202111101-SG and 6.5 before ESXi650-202110101-SG, VMware Workstation 16.2.0 and VMware Fusion 12.2.0 contains a heap-overflow vulnerability in CD-ROM device emulation. A malicious actor with access to a virtual machine with CD-ROM device emulation may be able t...

CVE-2021-22021

VMware vRealize Log Insight 8.x prior to 8.4 contains a Cross Site Scripting XSS vulnerability due to improper user input validation. An attacker with user privileges may be able to inject a malicious payload via the Log Insight UI which would be executed when the victim accesses the shared...

CVE-2021-22056

VMware Workspace ONE Access 21.08, 20.10.0.1, and 20.10 and Identity Manager 3.3.5, 3.3.4, and 3.3.3 contain an SSRF vulnerability. A malicious actor with network access may be able to make HTTP requests to arbitrary origins and read the full response...

CVE-2022-38651

A security filter misconfiguration exists in VMware Hyperic Server 5.8.6. Exploitation of this vulnerability enables a malicious party to bypass some authentication requirements when issuing requests to Hyperic Server. NOTE: This vulnerability only affects products that are no longer supported by...

CVE-2022-38652

A remote insecure deserialization vulnerability exixsts in VMWare Hyperic Agent 5.8.6. Exploitation of this vulnerability enables a malicious authenticated user to run arbitrary code or malware within a Hyperic Agent instance and its host operating system with the privileges of the Hyperic Agent...

CVE-2022-38650

A remote unauthenticated insecure deserialization vulnerability exists in VMware Hyperic Server 5.8.6. Exploitation of this vulnerability enables a malicious party to run arbitrary code or malware within Hyperic Server and the host operating system with the privileges of the Hyperic server proces...

CVE-2022-23235

Active IQ Unified Manager for VMware vSphere, Linux, and Microsoft Windows versions prior to 9.10P1 are susceptible to a vulnerability which could allow an attacker to discover cluster, node and Active IQ Unified Manager specific information via AutoSupport telemetry data that is sent even when...

CVE-2022-23239

Active IQ Unified Manager for VMware vSphere, Linux, and Microsoft Windows versions prior to 9.11P1 are susceptible to a vulnerability which allows administrative users to perform a Stored Cross-Site Scripting XSS attack...