Citrix NetScaler Memory Overflow Vulnerability

Technical Severity

CVSS v3.1 Metrics

CRITICAL

9.8 / 10

Minimal Risk Critical

Vector Specification

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

Exploitation Likelihood

EPSS Prediction

6.57 %

Predictive Probability

Percentile Rank

91.1 th

Documented as more likely to be exploited than 91.1% of known CVEs.

Detection Date

Aug 26, 2025

Remediation Due

Aug 28, 2025

CISA Catalog Active

Threat Analysis

Citrix NetScaler ADC and NetScaler Gateway contain a memory overflow vulnerability that could allow for remote code execution and/or denial of service.

Remediation Directive

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

External Intelligence

https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX694938

NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2025-7775