Insufficient input validation leading to memory overread

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Summary

CVECVE-2026-8451
StatePUBLISHED
AssignerNetScaler
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-30 13:19:33 UTC
Updated2026-07-01 15:52:58 UTC
DescriptionInsufficient input validation in NetScaler ADC and NetScaler Gateway leading to memory overread if NetScaler ADC or NetScaler Gateway is configured as a SAML IDP

Risk And Classification

Primary CVSS: v4.0 8.8 HIGH from 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-125 | awe-125 | CWE-125 CWE-125 Out-of-bounds Read

VersionSourceTypeScoreSeverityVector
4.050a63c94-1ea7-4568-8c11-eb79e7c5a2b5Secondary8.8HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/C...
4.0CNACVSS8.8HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:H/SC:N/SI:N/SA:N
3.1[email protected]Primary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
Low
Availability
High
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Citrix Netscaler Application Delivery Controller All All All All
Application Citrix Netscaler Application Delivery Controller All All All All
Application Citrix Netscaler Application Delivery Controller All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA NetScaler ADC affected 14.1 72.61 patch Not specified
CNA NetScaler ADC affected 13.1 63.18 patch Not specified
CNA NetScaler ADC affected 14.1 FIPs 72.61 patch Not specified
CNA NetScaler ADC affected 13.1 FIPS and NDcPP 37.272 patch Not specified
CNA NetScaler Gateway affected 14.1 72.61 patch Not specified
CNA NetScaler Gateway affected 13.1 63.18 patch Not specified

References

ReferenceSourceLinkTags
support.citrix.com/support-home/kbsearch/article 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5 support.citrix.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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