CVE detail
CVE-2026-3055: Citrix NetScaler Out-of-Bounds Read Vulnerability
Source: CISA Known Exploited Vulnerabilities catalog · back to feed
Vendor / product
Citrix · NetScaler
- Date added (KEV)
- Mar 30, 2026
- CISA due date
- Apr 02, 2026
- Ransomware campaign use
- Unknown
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Scorifya interpretation
AI-generatedA short, structured read of the record above, generated when this page first loads, then cached for a week.
Plain English
Technical detail
From CISA
Citrix NetScaler ADC (formerly Citrix ADC), NetScaler Gateway (formerly Citrix Gateway) and NetScaler ADC FIPS and NDcPP contain an out-of-bounds reads vulnerability when configured as a SAML IDP leading to memory overread.
https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696300&articleURL=NetScaler_ADC_and_NetScaler_Gateway_Security_Bulletin_for_CVE_2026_3055_and_CVE_2026_4368 ; https://nvd.nist.gov/vuln/detail/CVE-2026-3055
See what attackers can see on your domain
This vulnerability is on CISA's Known Exploited Vulnerabilities list, so it is being exploited in the wild right now. Scorifya can't test for Citrix directly, but in about 30 seconds it shows what your own domain exposes publicly across TLS, security headers, DNS, and cookies: the surface attackers probe first.
SOC 2 compliance
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See Scorifya Controls →References
- https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696300Vendor Advisory
- https://labs.watchtowr.com/please-we-beg-just-one-weekend-free-of-appliances-citrix-netscaler-cve-2026-3055-memory-overread-part-2/ExploitThird Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-3055US Government Resource
Other recent CVEs from Citrix
- CVE-2025-7775NetScaler, Citrix NetScaler Memory Overflow Vulnerability
- CVE-2024-8068Session Recording, Citrix Session Recording Improper Privilege Management Vulnerability
- CVE-2024-8069Session Recording, Citrix Session Recording Deserialization of Untrusted Data Vulnerability
- CVE-2025-5777NetScaler ADC and Gateway, Citrix NetScaler ADC and Gateway Out-of-Bounds Read Vulnerability
- CVE-2025-6543NetScaler ADC and Gateway, Citrix NetScaler ADC and Gateway Buffer Overflow Vulnerability