Is CVE-2017-4933 in the CISA KEV catalog?

No. CVE-2017-4933 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-4933?

CVE-2017-4933 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2017-4933?

CVE-2017-4933 has an EPSS score of 3.57% (88th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-4933?

Upgrade fusion to 8.5.9 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2017-4933

HIGHEPSS 88th pctl

8.8

CVSS v3

NVD

Description

VMware ESXi (6.5 before ESXi650-201710401-BG), Workstation (12.x before 12.5.8), and Fusion (8.x before 8.5.9) contain a vulnerability that could allow an authenticated VNC session to cause a heap overflow via a specific set of VNC packets resulting in heap corruption. Successful exploitation of this issue could result in remote code execution in a virtual machine via the authenticated VNC session. Note: In order for exploitation to be possible in ESXi, VNC must be manually enabled in a virtual machine's .vmx configuration file. In addition, ESXi must be configured to allow VNC traffic through the built-in firewall.

CWE-787Out-of-bounds Write

How to fix

Remediation Available

fusionNVD

Affected:>= 8.0.0, < 8.5.9Fixed in:8.5.9CVE-2017-4933derived from NVD

workstation proNVD

Affected:>= 12.0.0, < 12.5.8Fixed in:12.5.8CVE-2017-4933derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

3.57%probability of exploitation in 30 days

88thpercentile

Elevated risk: more likely to be exploited than 88% of all known CVEs.

References

Vendor Advisory1

vmware.com

Third-Party Advisory2

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2023-4863	High	8.8	100%	KEV	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.