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VULNERABILITIES

CVE-2026-3055 Details

Description

Insufficient input validation in NetScaler ADC and NetScaler Gateway when configured as a SAML IDP leading to memory overread

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://labs.watchtowr.com/please-we-beg-just-one-weekend-free-of-appliances-citrix-netscaler-cve-2026-3055-memory-overread-part-2/ CISA-ADPExploitThird Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-3055 CISA-ADPUS Government Resource
https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696300 NetScalerVendor Advisory

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

Vulnerability NameDate AddedDue DateRequired Action
Citrix NetScaler Out-of-Bounds Read VulnerabilityMar 30, 2026Apr 2, 2026Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Weakness Enumeration

CWE-IDCWE NameSource
CWE-125Out-of-bounds ReadNetScaler

Affected Products

ProductVersions
citrix netscaler application delivery controller
>= 13.1, < 13.1-37.262
>= 13.1, < 13.1-62.23
>= 14.1, < 14.1-60.58

CPE

  • cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*
  • cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:*
  • cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*

Remediation

  • No remediation found in references.
citrix netscaler gateway
>= 13.1, < 13.1-62.23
>= 14.1, < 14.1-60.58

CPE

  • cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-3055
NVD Published Date:
Mar 23, 2026
NVD Last Modified:
Jun 17, 2026
Source:
NetScaler
CVE-2026-3055 Details - Not Deferred