CVE-2015-5538

Multiple unspecified vulnerabilities in Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway before 10.1 Build 132.8, 10.5 before Build 57.7, and 10.5e before Build 56.1505.e allow remote attackers to gain privileges via unknown vectors, related to the (1) Command Line Interface (CLI) and the (2) Web User Interface (UI).

Published: 2015-09-17 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-5538 is rated High Risk (71.3/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 3.12%). EPSS rose +1.15% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize 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-2015-5538

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 1.97% 3.12% +1.15%
2 2025-03-30 2.77% 1.97% -0.80%
3 2025-03-29 — 2.77% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-5538

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C 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:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2015-5538

Affected software / configurations for CVE-2015-5538

Vendor Product Version Raw CPE
citrix netscaler_application_delivery_controller_firmware 10.1 cpe:2.3:o:citrix:netscaler_application_delivery_controller_firmware:10.1:*:*:*:*:*:*:*
citrix netscaler_application_delivery_controller_firmware 10.5 cpe:2.3:o:citrix:netscaler_application_delivery_controller_firmware:10.5:*:*:*:*:*:*:*
citrix netscaler_application_delivery_controller_firmware 10.5e cpe:2.3:o:citrix:netscaler_application_delivery_controller_firmware:10.5e:*:*:*:*:*:*:*
citrix netscaler_gateway_firmware 10.1 cpe:2.3:o:citrix:netscaler_gateway_firmware:10.1:*:*:*:*:*:*:*
citrix netscaler_gateway_firmware 10.5 cpe:2.3:o:citrix:netscaler_gateway_firmware:10.5:*:*:*:*:*:*:*
citrix netscaler_gateway_firmware 10.5e cpe:2.3:o:citrix:netscaler_gateway_firmware:10.5e:*:*:*:*:*:*:*

References for CVE-2015-5538

cvelogic Threat Intelligence