HIGH SEVERITY

CVE-2015-5538

Netscaler Application Delivery Controller Firmware vulnerability

CVSS
10.0
EPSS
3.2%
EPSS pct
87th
Exploited
No known
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).
Affected vendor
Citrix
Affected product
Netscaler Application Delivery Controller Firmware
CVSS vector
AV:N/AC:L/Au:N/C:C/I:C/A:C
Published
2015-09-17

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to complete impact to confidentiality, complete impact to integrity, complete impact to availability.

Its EPSS score of 3.2% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 87% of all scored CVEs.

Check your external exposure to CVE-2015-5538

  • Confirm whether Citrix Netscaler Application Delivery Controller Firmware is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2015-5538.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2015-5538

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2015-5538 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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