High 8.8Known exploited (CISA KEV)Published Jun 30, 2026

CVE-2026-8452Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of Service

Updated under an hour ago (Oct 27, 2026, 11:10 AM ET)

Does this affect you?

It affects NetScaler ADC and 3 other products. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Aug 26, 2026; federal agencies had to remediate by Aug 29, 2026. Treat that date as your deadline.

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Every CVE for NetScaler ADC

Exploited in the last 30 days

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: 8.8 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-119
Known exploited: Added to CISA KEV Aug 26, 2026; federal remediation due Aug 29, 2026Apply 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.
EPSS (exploitation in the next 30 days): 1.01% (percentile 63)
Assigned by: NetScaler
NVD analysis: Analyzed
Record last updated: Aug 26, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

NetScaler ADC netscaler:adc (from the name)	from 14.1 before 72.61; from 13.1 before 63.18; from 14.1 FIPS before 72.61; from 13.1 FIPS and NDcPP before 37.272	CNA record
NetScaler Gateway netscaler:gateway (from the name)	from 14.1 before 72.61; from 13.1 before 63.18	CNA record
citrix netscaler_application_delivery_controller citrix:netscaler_application_delivery_controller	before 13.1-37.272; before 13.1-37.272; from 13.1 before 13.1-63.18; from 14.1 before 14.1-72.61; 14.1-66.68	NVD
citrix netscaler_gateway citrix:netscaler_gateway	from 13.1 before 13.1-63.18; from 14.1 before 14.1-72.61	NVD

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.