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VulnerabilityKnown exploitedExploit likelihood 91%
Citrix NetScaler Out-of-Bounds Read Vulnerability
CVE-2026-3055 · CISA KEV · March 30, 2026
Summary
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.
From CISA, quoted as published. Check the source before acting.
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA required action, quoted.
Affected products
| Vendor | Product |
|---|---|
| Citrix | NetScaler |
Why it's on these mode pages
- Maritime: Vendor table: Citrix (network and remote-access gear used in every mode, all modes) (matched by rule)
- Pipeline: Vendor table: Citrix (network and remote-access gear used in every mode, all modes) (matched by rule)
- Freight rail: Vendor table: Citrix (network and remote-access gear used in every mode, all modes) (matched by rule)
- Passenger rail and transit: Vendor table: Citrix (network and remote-access gear used in every mode, all modes) (matched by rule)
- Highway and motor carrier: Vendor table: Citrix (network and remote-access gear used in every mode, all modes) (matched by rule)
- Postal and parcel: Vendor table: Citrix (network and remote-access gear used in every mode, all modes) (matched by rule)
Change history
- November 9, 2026: First collected by Watch
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