Vulnerability Database

383,371

Total vulnerabilities in the database

CVE-2017-4925 — vmware / workstation

NULL Pointer Dereference

VMware ESXi 6.5 without patch ESXi650-201707101-SG, ESXi 6.0 without patch ESXi600-201706101-SG, ESXi 5.5 without patch ESXi550-201709101-SG, Workstation (12.x before 12.5.3), Fusion (8.x before 8.5.4) contain a NULL pointer dereference vulnerability. This issue occurs when handling guest RPC requests. Successful exploitation of this issue may allow attackers with normal user privileges to crash their VMs.

  • Published: Sep 15, 2017
  • Updated: Sep 13, 2026
  • CVE: CVE-2017-4925
  • Severity: Medium
  • Exploit:
  • CISA KEV:

CVSS v3:

  • Severity: Medium
  • Score: 5.5
  • AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v2:

  • Severity: Low
  • Score: 2.1
  • AV:L/AC:L/Au:N/C:N/I:N/A:P

CWEs:

Software Affected versions
vmware / workstation >= 12.0.0, < 12.5.3
vmware / workstation_pro >= 12.0.0, < 12.5.3
vmware / fusion >= 8.0.0, < 8.5.4
vmware / esxi = 5.5
vmware / esxi = 5.5-1
vmware / esxi = 5.5-2
vmware / esxi = 5.5-3a
vmware / esxi = 5.5-3b
vmware / esxi = 5.5-550-20170901001s
vmware / esxi = 6.0
vmware / esxi = 6.0-1
vmware / esxi = 6.0-1a
vmware / esxi = 6.0-1b
vmware / esxi = 6.0-2
vmware / esxi = 6.0-3
vmware / esxi = 6.0-3a
vmware / esxi = 6.0-600-201504401
vmware / esxi = 6.0-600-201505401
vmware / esxi = 6.0-600-201507101
vmware / esxi = 6.0-600-201507102
vmware / esxi = 6.0-600-201507401
vmware / esxi = 6.0-600-201507402
vmware / esxi = 6.0-600-201507403
vmware / esxi = 6.0-600-201507404
vmware / esxi = 6.0-600-201507405
vmware / esxi = 6.0-600-201507406
vmware / esxi = 6.0-600-201507407
vmware / esxi = 6.0-600-201509101
vmware / esxi = 6.0-600-201509102
vmware / esxi = 6.0-600-201509201
vmware / esxi = 6.0-600-201509202
vmware / esxi = 6.0-600-201509203
vmware / esxi = 6.0-600-201509204
vmware / esxi = 6.0-600-201509205
vmware / esxi = 6.0-600-201509206
vmware / esxi = 6.0-600-201509207
vmware / esxi = 6.0-600-201509208
vmware / esxi = 6.0-600-201509209
vmware / esxi = 6.0-600-201509210
vmware / esxi = 6.0-600-201510401
vmware / esxi = 6.0-600-201511401
vmware / esxi = 6.0-600-201601101
vmware / esxi = 6.0-600-201601102
vmware / esxi = 6.0-600-201601401
vmware / esxi = 6.0-600-201601402
vmware / esxi = 6.0-600-201601403
vmware / esxi = 6.0-600-201601404
vmware / esxi = 6.0-600-201601405
vmware / esxi = 6.0-600-201602401
vmware / esxi = 6.0-600-201603101
vmware / esxi = 6.0-600-201603102
vmware / esxi = 6.0-600-201603201
vmware / esxi = 6.0-600-201603202
vmware / esxi = 6.0-600-201603203
vmware / esxi = 6.0-600-201603204
vmware / esxi = 6.0-600-201603205
vmware / esxi = 6.0-600-201603206
vmware / esxi = 6.0-600-201603207
vmware / esxi = 6.0-600-201603208
vmware / esxi = 6.0-600-201605401
vmware / esxi = 6.0-600-201608101
vmware / esxi = 6.0-600-201608401
vmware / esxi = 6.0-600-201608402
vmware / esxi = 6.0-600-201608403
vmware / esxi = 6.0-600-201608404
vmware / esxi = 6.0-600-201608405
vmware / esxi = 6.0-600-201610410
vmware / esxi = 6.0-600-201611401
vmware / esxi = 6.0-600-201611402
vmware / esxi = 6.0-600-201611403
vmware / esxi = 6.0-600-201702101
vmware / esxi = 6.0-600-201702102
vmware / esxi = 6.0-600-201702201
vmware / esxi = 6.0-600-201702202
vmware / esxi = 6.0-600-201702203
vmware / esxi = 6.0-600-201702204
vmware / esxi = 6.0-600-201702205
vmware / esxi = 6.0-600-201702206
vmware / esxi = 6.0-600-201702207
vmware / esxi = 6.0-600-201702208
vmware / esxi = 6.0-600-201702209
vmware / esxi = 6.0-600-201702210
vmware / esxi = 6.0-600-201702211
vmware / esxi = 6.0-600-201702212
vmware / esxi = 6.0-600-201703401
vmware / esxi = 6.5
vmware / esxi = 6.5-650-201701001
vmware / esxi = 6.5-650-201703001
vmware / esxi = 6.5-650-201703002
vmware / esxi = 6.5-650-201704001

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.