CVE-2011-1789

The self-extracting installer in the vSphere Client Installer package in VMware vCenter 4.0 before Update 3 and 4.1 before Update 1, VMware ESXi 4.x before 4.1 Update 1, and VMware ESX 4.x before 4.1 Update 1 does not have a digital signature, which might make it easier for remote attackers to spoof the software distribution via a Trojan horse installer.

Published: 2011-05-09 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-1789 is rated Moderate Risk (48.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.90%). EPSS rose +1.54% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2011-1789

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.36% 1.90% +1.54%
2 2025-03-30 0.57% 0.36% -0.21%
3 2025-03-29 — 0.57% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-1789

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2011-1789

Affected software / configurations for CVE-2011-1789

Vendor Product Version Raw CPE
vmware esx 4.0 cpe:2.3:a:vmware:esx:4.0:*:*:*:*:*:*:*
vmware esx 4.1 cpe:2.3:a:vmware:esx:4.1:*:*:*:*:*:*:*
vmware esxi 4.0 cpe:2.3:a:vmware:esxi:4.0:*:*:*:*:*:*:*
vmware esxi 4.1 cpe:2.3:a:vmware:esxi:4.1:*:*:*:*:*:*:*
vmware vcenter 4.0 cpe:2.3:a:vmware:vcenter:4.0:*:*:*:*:*:*:*
vmware vcenter 4.0 cpe:2.3:a:vmware:vcenter:4.0:update_1:*:*:*:*:*:*
vmware vcenter 4.0 cpe:2.3:a:vmware:vcenter:4.0:update_2:*:*:*:*:*:*
vmware vcenter 4.1 cpe:2.3:a:vmware:vcenter:4.1:*:*:*:*:*:*:*

References for CVE-2011-1789

cvelogic Threat Intelligence