CVE-2026-3055NVD

Vulnerability Summary

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

Severity Level

UNKNOWN

Published Date

Mar 23, 2026

Last Modified

Mar 31, 2026

PoC

Available(Metasploit, Nuclei)

Exploitation Status

ACTIVE

EPSS Score (30-Day)

45.19%Probability

Root Weakness (CWE)

CWE-125: Out-of-bounds Read ↗

The software reads data past the end, or before the beginning, of the intended buffer.

CVSS v4.0 Base Metrics — Score 9.3 (CRITICAL)

Attack VectorNetwork

Attack ComplexityLow

Attack RequirementsNone

Privileges RequiredNone

User InteractionNone

Confidentiality (Vulnerable System)High

Integrity (Vulnerable System)High

Availability (Vulnerable System)High

Confidentiality (Subsequent System)Low

Integrity (Subsequent System)Low

Availability (Subsequent System)Low

Affected & Patched Versions

Affected Versions

NetScaler ADC >= 14.1 and < 66.59
NetScaler ADC >= 13.1 and < 62.23
NetScaler ADC >= 13.1 FIPS and NDcPP and < 37.262
NetScaler Gateway >= 14.1 and < 66.59
NetScaler Gateway >= 13.1 and < 62.23

Patched Versions

NetScaler ADC 66.59
NetScaler ADC 62.23
NetScaler ADC 37.262
NetScaler Gateway 66.59
NetScaler Gateway 62.23

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