Citrix Patches Six NetScaler Flaws Allowing File Read and Denial-of-Service

Citrix on Tuesday released security updates to address multiple flaws in NetScaler ADC formerly Citrix ADC and NetScaler Gateway formerly Citrix Gateway that could be exploited by an attacker to facilitate arbitrary file reads or trigger a denial-of-service DoS condition. The vulnerabilities are...

CVE-2026-8655

Multiple Memory overflow vulnerabilities in NetScaler ADC and NetScaler Gateway leading to unpredictable or erroneous behavior and Denial of Service if NetScaler ADC is configured as an LB of type Oracle OR NetScaler ADC is configured as a DNS Proxy OR NetScaler ADC is configured as a DNS recursi...

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...

CVE-2026-8451

Insufficient input validation in NetScaler ADC and NetScaler Gateway leading to memory overread if NetScaler ADC or NetScaler Gateway is configured as a SAML IDP...

CVE-2026-13474

Denial of service via malformed HTTP/2 requests in NetScaler ADC and NetScaler Gateway if HTTP/2 is enabled in HTTP Profile and associated with the virtual server of type LB, CS, VPN or the service configured on NetScaler...

CVE-2026-10817

Insufficient input validation leading to memory overread in NetScaler ADC and NetScaler Gateway if the TCP TimeStamp is enabled in TCP Profile and is associated with the virtual server of type LB, CS, VPN or the service configured on NetScaler...

CVE-2026-10816

Arbitrary File Read Unauthenticated in NetScaler ADC and NetScaler Gateway if the access to NSIP, Cluster Management IP or SNIP with management access is enabled...

EUVD-2026-40320

Denial of service via malformed HTTP/2 requests in NetScaler ADC and NetScaler Gateway if HTTP/2 is enabled in HTTP Profile and associated with the virtual server of type LB, CS, VPN or the service configured on NetScaler...

CVE-2026-10817

CVE-2026-10817 : Insufficient input validation leads to a memory overread in Citrix NetScaler ADC and NetScaler Gateway when TCP TimeStamp is enabled in a TCP Profile and associated with a virtual server (LB/CS/VPN) or the configured service. The vulnerability is described across the NVD/CVE refe...

CVE-2026-8655 Multiple Memory overflow vulnerabilities leading to unpredictable or erroneous behavior and Denial of Service

Multiple Memory overflow vulnerabilities in NetScaler ADC and NetScaler Gateway leading to unpredictable or erroneous behavior and Denial of Service if NetScaler ADC is configured as an LB of type Oracle OR NetScaler ADC is configured as a DNS Proxy OR NetScaler ADC is configured as a DNS recursi...

CVE-2026-8655

CVE-2026-8655 corresponds to multiple memory overflow vulnerabilities in NetScaler ADC and NetScaler Gateway that can cause unpredictable behavior and DoS when the appliance is used as an Oracle load balancer, a DNS Proxy, or a DNS recursive resolver. The NVD/NIST entry and multiple security advi...

EUVD-2026-40308

Multiple Memory overflow vulnerabilities in NetScaler ADC and NetScaler Gateway leading to unpredictable or erroneous behavior and Denial of Service if NetScaler ADC is configured as an LB of type Oracle OR NetScaler ADC is configured as a DNS Proxy OR NetScaler ADC is configured as a DNS recursi...

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

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...

EUVD-2026-40307

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...

CVE-2026-8452

CVE-2026-8452 is a memory overflow vulnerability in Citrix NetScaler ADC and NetScaler Gateway that can cause unpredictable behavior and a Denial of Service when the appliance is configured as a Gateway/AAA virtual server. The CVE entry is supported by multiple sources noting a memory overflow co...

PT-2026-53881

Name of the Vulnerable Software and Affected Versions NetScaler ADC affected versions not specified NetScaler Gateway affected versions not specified Description Multiple memory overflow issues can lead to unpredictable or erroneous behavior and Denial of Service. This occurs when NetScaler ADC i...

PT-2026-53866

Name of the Vulnerable Software and Affected Versions NetScaler ADC affected versions not specified NetScaler Gateway affected versions not specified Description An unauthenticated arbitrary file read issue exists when access to the NSIP NetScaler IP, Cluster Management IP, or SNIP Subnet IP with...

PT-2026-53880

Name of the Vulnerable Software and Affected Versions NetScaler ADC affected versions not specified NetScaler Gateway affected versions not specified Description A memory overflow issue exists when the appliance is configured as an AAA virtual server or a Gateway, including SSL VPN, ICA Proxy,...

PT-2026-53867

Name of the Vulnerable Software and Affected Versions NetScaler ADC affected versions not specified NetScaler Gateway affected versions not specified Description Insufficient input validation leads to a memory overread when the TCP TimeStamp is enabled in the TCP Profile and is associated with a...

PT-2026-53868

Name of the Vulnerable Software and Affected Versions NetScaler ADC affected versions not specified NetScaler Gateway affected versions not specified Description A denial of service issue exists when HTTP/2 is enabled in the HTTP Profile and associated with a virtual server of type LB, CS, or VPN...