- High 8.8
- Known exploited (CISA KEV)
CVE-2026-8452
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
The facts
- Published
- 30 June 2026
- Last changed
- 27 August 2026
- NVD status
- Analyzed
- Severity
- High, CVSS 8.8 out of 10 (version 4.0)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R… - Weakness
- Affects
- citrix netscaler application delivery controller
- citrix netscaler gateway
- Known exploited
- Yes. CISA added it to the Known Exploited Vulnerabilities catalogue on 26 August 2026.
- EPSS
- 1.0% chance of exploitation activity in the next 30 days (percentile 63).
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