Ce mail provient de l'extérieur, restons vigilants ===================================================================== CERT-Renater Note d'Information No. 2026/VULN975 _____________________________________________________________________ DATE : 06/10/2026 HARDWARE PLATFORM(S): / OPERATING SYSTEM(S): Systems running Citrix NetScaler ADC and Citrix NetScaler Gateway versions 14.1, 13.1, prior to 14.1-73.41, 13.1-64.28, Citrix NetScaler ADC FIPS versions prior to 14.1-73.41 FIPS, Citrix NetScaler ADC FIPS and NDcPP versions prior to 13.1-37.282. ==================================================================== https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697174 _____________________________________________________________________ Citrix NetScaler ADC and Citrix NetScaler Gateway Security Bulletin for CVE-2026-88779 Article Id : CTX697174 Last Modified Date : 10-04-2026 02:19 Created Date : 10-04-2026 02:03 Article Record Type : Security Bulletin Severity : High Summary Severity - High Description of Problem A vulnerability has been discovered in Citrix NetScaler ADC (formerly Citrix ADC) and Citrix NetScaler Gateway (formerly Citrix Gateway). Refer below for further details. Affected Versions: The following supported versions of NetScaler are affected by the vulnerability: Citrix NetScaler ADC and Citrix NetScaler Gateway 14.1 BEFORE 14.1-73.41 Citrix NetScaler ADC and Citrix NetScaler Gateway 13.1 BEFORE 13.1-64.28 Citrix NetScaler ADC FIPS BEFORE 14.1-73.41 FIPS Citrix NetScaler ADC FIPS and NDcPP BEFORE 13.1-37.282 Additional Note: Secure Private Access Hybrid deployments using NetScaler instances are also affected by the vulnerabilities. Customers need to upgrade these NetScaler instances to the recommended NetScaler builds to address the vulnerabilities. This bulletin only applies to customer-managed Citrix NetScaler ADC (“NetScaler ADC”) and Citrix NetScaler Gateway (“NetScaler Gateway”). Cloud Software Group upgrades the Citrix-managed cloud services and Citrix-managed Adaptive Authentication with the necessary software updates. Details NetScaler ADC and NetScaler Gateway is affected by the vulnerability described below CVE-ID Description Pre-conditions CWE CVSSv4 CVE-2026-88779 Memory overflow vulnerability leading to Denial of Service NetScaler ADC or NetScaler Gateway must be configured as a SAML SP OR SAML IdP CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer CVSS v4.0 Base Score: 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N What Customers Should Do Cloud Software Group strongly urges affected customers of NetScaler ADC and NetScaler Gateway to install the relevant updated versions as soon as possible: NetScaler ADC and NetScaler Gateway 14.1-73.41 and later releases NetScaler ADC and NetScaler Gateway 13.1-64.28 and later releases of 13.1 NetScaler ADC 14.1-FIPS 14.1-73.41 FIPS and later releases of 14.1-FIPS NetScaler ADC 13.1-FIPS and 13.1-NDcPP 13.1-37.282 and later releases of 13.1-FIPS and 13.1-NDcPP Steps to determine if an appliance meets the CVE preconditions Instructions: Customers can determine whether their NetScaler deployment meets the precondition by inspecting their NetScaler configuration for entries matching either of the following: Appliance is configured as a SAML SP add authentication samlAction OR Appliance is configured as a SAML IdP add authentication samlIdPProfile Acknowledgement Cloud Software Group thanks Bishop Fox and watchTowr for working with us to protect our customers. Additional information / Reference Blog Cloud Software Group team has published a related blog at: https://community.citrix.com/techzone-blogs/110_security-updates/understanding-and-addressing-cve-2026-88779-in-citrix-netscaler-adc-and-citrix-netscaler-gateway/ which contains further context. What Citrix is Doing Citrix is notifying customers and channel partners about this potential security issue through the publication of this security bulletin on the Citrix Knowledge Center at https://support.citrix.com/support-home/topic-article-list?trendingCategory=20&trendingTopicName=Security%20Bulletin Obtaining Support on This Issue If you require technical assistance with this issue, please contact Citrix Technical Support. Contact details for Citrix Technical Support are available at https://support.citrix.com/support-home/home Subscribe to Receive Alerts Citrix strongly recommends that all customers subscribe to receive alerts when a Citrix security bulletin is created or modified at https://support.citrix.com/wolken-support/view/aboutsupport/my-support-alerts Reporting Security Vulnerabilities to Citrix Citrix welcomes input regarding the security of its products and considers any and all potential vulnerabilities seriously. For details on our vulnerability response process and guidance on how to report security-related issues to Citrix, please see the following webpage: https://www.cloud.com/trust-center/support Changelog 2026-10-03 (PST) Initial Publication 2026-10-03 (PST) Added a link to the NetScaler blog that contains further context Disclaimer The information on this page is being provided to you on an "AS IS" and "AS-AVAILABLE" basis. 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