CVE-2026-3055
Last modified
CVE-2026-3055 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Insufficient input validation in NetScaler ADC and NetScaler Gateway when configured as a SAML IDP leading to memory overread. CISA has confirmed active exploitation in the wild. EPSS estimates a 84.00% chance of exploitation in the next 30 days.
Description
Insufficient input validation in NetScaler ADC and NetScaler Gateway when configured as a SAML IDP leading to memory overread
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Citrix | Netscaler Application Delivery Controller | >= 13.1, < 13.1-37.262 |
| Citrix | Netscaler Application Delivery Controller | >= 13.1, < 13.1-62.23 |
| Citrix | Netscaler Application Delivery Controller | >= 14.1, < 14.1-60.58 |
| Citrix | Netscaler Gateway | >= 13.1, < 13.1-62.23 |
| Citrix | Netscaler Gateway | >= 14.1, < 14.1-60.58 |
References
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-3055US Government Resource
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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