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

CVSS v4.0

8.8 HIGHCVSS: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:X/V:X/RE:X/U:X

CVSS v3.1

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

EPSS

1.61% chance of exploitation in the next 30 days, 74th percentile

CISA KEV

added 2026-08-26

Published

2026-06-30

Updated

2026-08-27

Proof-of-concept exploits (2)

• watchtowrlabs/watchTowr-vs-Citrix-Netscaler-PreAuth-RCE-CVE-2026-845260★ · 2026-08-14
• maxprog-svg/CitrixBleedCVE-2026-8452-2025-57770★ · 2026-08-30

References

• CVE Record
• NVD entry

Related

• CVE-2025-5777
• CVE-2026-55040
• CVE-2026-8451
• CVE-2026-8461
• CVE-2026-84371
• CVE-2026-8467