CVE-2026-3055 | Citrix NetScaler ADC/NetScaler Gateway SAML IdP out-of-bounds (CTX696300)

VDB-352633 · CVE-2026-3055 · CTX696300 CITRIX NETSCALER ADC/NETSCALER GATEWAY SAML IDP OUT-OF-BOUNDS HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 9.4 $0-$5k 1.93+ Summaryinfo A vulnerability, which was classified as critical, has been found in Citrix NetScaler ADC and NetScaler Gateway. The affected element is an unknown function of the component SAML IdP Handler. This manipulation causes out-of-bounds. This vulnerability appears as CVE-2026-3055. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component. Detailsinfo A vulnerability has been found in Citrix NetScaler ADC and NetScaler Gateway (affected version unknown) and classified as very critical. Affected by this vulnerability is an unknown functionality of the component SAML IdP Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is: Insufficient input validation in NetScaler ADC and NetScaler Gateway when configured as a SAML IDP leading to memory overread The advisory is shared at support.citrix.com. This vulnerability is known as CVE-2026-3055 since 02/23/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/24/2026). Upgrading eliminates this vulnerability. Productinfo Type Network Management Software Vendor Citrix Name NetScaler ADC NetScaler Gateway License commercial Website Vendor: https://www.citrix.com/ CPE 2.3info 🔒 🔒 CPE 2.2info 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 9.8 VulDB Meta Temp Score: 9.4 VulDB Base Score: 9.8 VulDB Temp Score: 9.4 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Out-of-bounds CWE: CWE-125 / CWE-119 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Timelineinfo 02/23/2026 CVE reserved 03/24/2026 +29 days Advisory disclosed 03/24/2026 +0 days VulDB entry created 03/24/2026 +0 days VulDB entry last update Sourcesinfo Vendor: citrix.com Advisory: CTX696300 Status: Confirmed CVE: CVE-2026-3055 (🔒) GCVE (CVE): GCVE-0-2026-3055 GCVE (VulDB): GCVE-100-352633 Entryinfo Created: 03/24/2026 02:49 Changes: 03/24/2026 02:49 (67) Complete: 🔍 Cache ID: 99:5DA:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸