← CVE Radar
CVE-2026-3055Insufficient input validation leading to memory overread
Insufficient input validation in NetScaler ADC and NetScaler Gateway when configured as a SAML IDP leading to memory overread
9.3 CRITICALEPSS 91.49%⚡ Known Exploited (CISA KEV)NVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 9.3 | CRITICAL | 4.0NetScaler (CNA) | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L |
| 9.8 | CRITICAL | 3.1NVD | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
CISA required action
⚡ Known exploited · remediation due Apr 2, 2026
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Details
- CVE ID
- CVE-2026-3055
- Status
- Analyzed
- Assigner (CNA)
- NetScaler
- Published
- Mar 23, 2026
- Last modified
- 2026-06-17 10:42 UTC
- Weaknesses
- CWE-125 · Out-of-bounds Read
Affected Products
As published by the CNA in the CVE record.
NetScalerADC3 version ranges
- 14.1 before 66.59
- 13.1 before 62.23
- 13.1 FIPS and NDcPP before 37.262
NetScalerGateway2 version ranges
- 14.1 before 66.59
- 13.1 before 62.23
References
- support.citrix.com https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696300
- labs.watchtowr.com https://labs.watchtowr.com/please-we-beg-just-one-weekend-free-of-appliances-citrix-netscaler-cve-2026-3055-memory-overread-part-2/
- cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-3055