The flash-based vSphere Web Client (6.0 prior to 6.0 U3c and 5.5 prior to 5.5 U3f) i.e.

Published 8 y ago 2017-11-17 · modified 4 mo ago 2026-06-17 · JSON

CVSS

7.5

v3.0 · NVD

CISA KEV

not known exploited

EPSS

1.2%

percentile 69%

Public exploits

none known

The flash-based vSphere Web Client (6.0 prior to 6.0 U3c and 5.5 prior to 5.5 U3f) i.e. not the new HTML5-based vSphere Client, contains SSRF and CRLF injection issues due to improper neutralization of URLs. An attacker may exploit these issues by sending a POST request with modified headers towards internal services leading to information disclosure.

Exploit prediction (EPSS)

1.24% probability of exploitation in the next 30 days, higher than 69% of all scored CVEs.

CVSS scores

Assigned by	Version	Score	Vector
NVD	3.0	7.5	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`
NVD	2.0	5.0	`AV:N/AC:L/Au:N/C:P/I:N/A:N`

Affected products

VMware vSphere Web Client

Classification

Weakness

CWE-352 Cross-Site Request Forgery
CWE-918 Server-Side Request Forgery

Technology feeds

VMware (RSS, critical only)

References

vmware.com /security/advisories/VMSA-2017-0017.html · x_refsource_CONFIRM, x_transferred
securitytracker.com /id/1039759 · vdb-entry, x_refsource_SECTRACK, x_transferred
securityfocus.com /bid/101785 · vdb-entry, x_refsource_BID, x_transferred

Sources

CVE List: CVE-2017-4928
NVD: CVE-2017-4928

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.