CVE-2026-8451
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Memory Overread in NetScaler ADC and Gateway via SAML IDP

Publication date: 2026-06-30

Last updated on: 2026-06-30

Assigner: 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5

Description
Insufficient input validation in NetScaler ADC and NetScaler Gateway leading to memory overread if NetScaler ADC or NetScaler Gateway is configured as a SAML IDP

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Meta Information

Published
2026-06-30
Last Modified
2026-06-30
Generated
2026-06-30
AI Q&A
2026-06-30
EPSS Evaluated
N/A
NVD
CVE-2026-8451
EUVD
EUVD-2026-40305

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
citrix netscaler_adc *
citrix netscaler_gateway *

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.

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Executive Summary

This vulnerability is caused by insufficient input validation in NetScaler ADC and NetScaler Gateway when they are configured as a SAML Identity Provider (IDP). This flaw can lead to a memory overread, which means the system may read more memory than intended, potentially exposing sensitive information or causing unexpected behavior.

Impact Analysis

The impact of this vulnerability includes the possibility of unauthorized memory access due to the memory overread. This can lead to exposure of sensitive data stored in memory or cause instability in the affected systems. Given the high CVSS score of 8.8, the vulnerability is considered severe and could be exploited remotely without authentication.

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