← Vulnerability feed

Vulnerability record · CVE-2020-3963 · published 25 June 2020

CVE-2020-3963: Vmware cloud foundation use after free vulnerability

Vmware · Cloud Foundation

VMware ESXi (7.0 before ESXi_7.0.0-1.20.16321839, 6.7 before ESXi670-202006401-SG and 6.5 before ESXi650-202005401-SG), Workstation (15.x before 15.5.2), and Fusion (11.x before 11.5.2) contain a use-after-free vulnerability in PVNVRAM. A malicious actor with local access to a virtual machine may be able to read privileged information contained in physical memory.

5.5 CVSS 3.1 Medium EPSS 0.55% · top 55.6% CWE-416 · Use after free
5.5CVSS 3.1 base score, v2 2.1
0.55%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
6References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

VMware ESXi (7.0 before ESXi_7.0.0-1.20.16321839, 6.7 before ESXi670-202006401-SG and 6.5 before ESXi650-202005401-SG), Workstation (15.x before 15.5.2), and Fusion (11.x before 11.5.2) contain a use-after-free vulnerability in PVNVRAM. A malicious actor with local access to a virtual machine may be able to read privileged information contained in physical memory.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/158459/VMware-ESXi-Use-After-Free-Out-Of-Bounds-Access.html ExploitThird Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2020/Jul/22 ExploitMailing ListThird Party Advisory
https://www.vmware.com/security/advisories/VMSA-2020-0015.html Vendor Advisory
http://packetstormsecurity.com/files/158459/VMware-ESXi-Use-After-Free-Out-Of-Bounds-Access.html ExploitThird Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2020/Jul/22 ExploitMailing ListThird Party Advisory
https://www.vmware.com/security/advisories/VMSA-2020-0015.html Vendor Advisory

Track CVE-2020-3963 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2024-38813VMware vCenter Server privilege escalation to root via crafted packetvCenter Server contains a privilege escalation flaw where a malicious actor with network access can send a specially crafted network packet to escala…KEVEPSS 17%analysed9.8CVE-2024-38812VMware vCenter Server DCERPC heap overflow allows remote code executionvCenter Server contains a heap-based buffer overflow (CWE-122/CWE-787) in its DCERPC protocol implementation. A remote, unauthenticated attacker can …KEVEPSS 55%analysed9.8CVE-2024-37079VMware vCenter Server DCERPC heap overflow allows remote code executionvCenter Server contains a heap-overflow (out-of-bounds write) in its DCERPC protocol implementation. A remote, unauthenticated attacker can send a cr…KEVEPSS 22%analysed9.8CVE-2022-22954VMware Workspace ONE Access and Identity Manager server-side template injection RCEVMware Workspace ONE Access and Identity Manager are affected by a server-side template injection flaw that allows remote code execution. A network-r…KEVEPSS 100%analysed9.8CVE-2021-22005VMware vCenter Server Analytics arbitrary file upload to RCEThe Analytics service in VMware vCenter Server accepts a specially crafted file upload, which the product mishandles as a path traversal issue (CWE-2…KEVEPSS 100%analysed9.8CVE-2021-21985VMware vCenter Server Virtual SAN Health Check plug-in RCEThe vSphere Client (HTML5) in vCenter Server fails to validate input in the Virtual SAN Health Check plug-in, which is enabled by default. This allow…KEVEPSS 100%analysed9.8CVE-2021-21972VMware vCenter Server plugin path traversal leads to remote code executionThe vSphere Client (HTML5) in vCenter Server contains a path traversal flaw (CWE-22) in a plugin that allows an unauthenticated network attacker to u…KEVEPSS 100%analysed9.8CVE-2020-3992VMware ESXi OpenSLP use-after-free allows remote code executionOpenSLP as used in VMware ESXi contains a use-after-free flaw reachable over port 427 on the management network. An unauthenticated attacker with net…KEVEPSS 83%analysed

Source: NIST National Vulnerability Database (record CVE-2020-3963), CISA KEV, FIRST EPSS (scores of 2026-10-10). This page is refreshed as NVD updates the record.