CVE-2026-3055: Citrix NetScaler Out-of-Bounds Read Vulnerability

Published Mar 23, 2026
·
Updated

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.

Affected Software

9 affected components
Citrix NetScaler ADC
Citrix NetScaler Gateway
Citrix NetScaler
Citrix NetScaler Application Delivery Controller>=13.1<13.1-37.262
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

Remediation

Information

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Event History

Mar 23, 2026
CVE Published
via MITRE·08:21 PM
Data Sourced
via MITRE·08:21 PM
DescriptionWeakness
Data Sourced
via NVD·09:17 PM
DescriptionSeverityWeaknessAffected Software
Mar 25, 2026
News Published
via BleepingComputer·03:52 PM
News Published
via BleepingComputer·03:53 PM
Mar 30, 2026
Known Exploited
via CISA·12:00 AM
Data Sourced
via CISA·12:00 AM
RemedyDescriptionAffected Software
News Published
via The Register·01:49 PM
News Published
via The Register·01:51 PM
News Published
via BleepingComputer·06:28 PM
Mar 31, 2026
News Published
via BleepingComputer·07:05 AM
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Frequently Asked Questions

1

What is the severity of CVE-2026-3055?

CVE-2026-3055 has been classified as a critical severity vulnerability due to its potential to lead to memory overread.

2

How do I fix CVE-2026-3055?

To fix CVE-2026-3055, you should update to the latest version of Citrix NetScaler ADC or NetScaler Gateway that addresses this vulnerability.

3

What products are affected by CVE-2026-3055?

CVE-2026-3055 affects Citrix NetScaler ADC and Citrix NetScaler Gateway when configured as a SAML IDP.

4

What type of vulnerability is CVE-2026-3055?

CVE-2026-3055 is an insufficient input validation vulnerability that can lead to memory overread.

5

Can CVE-2026-3055 be exploited remotely?

Yes, CVE-2026-3055 can potentially be exploited remotely, increasing the risk of unauthorized access.

Company

Resources

Contact

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