MSRXCVE-2026-8452
CVE-2026-8452
Citrix NetScaler ADC and NetScaler Gateway Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CVSS 4.0 · CNA
chance of exploitation in the next 30 days (EPSS; higher than 63% of CVEs)
Memory overflow vulnerability NetScaler ADC and NetScaler Gateway leading to unpredictable or erroneous behavior and Denial of Service if the appliance is configured as a Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server
Scores
Affected products
- citrix netscaler application delivery controller: < 13.1-37.272; ≥ 13.1, < 13.1-63.18; ≥ 14.1, < 14.1-72.61; 14.1-66.68
- citrix netscaler gateway: ≥ 13.1, < 13.1-63.18; ≥ 14.1, < 14.1-72.61
Weakness: CWE-119
2 references (advisories, patches, write-ups)
- https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604 · Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-8452 · US Government Resource
Sources: NVD, CVE.org, FIRST EPSS. Missing ones did not answer or have no record yet.