CVE-2026-8451 - Vulnerability Details - OpenCVE

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

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable yes

Technical Impact total

No data.

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors	Products

References

Link	Providers
https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604

History

Tue, 30 Jun 2026 16:00:00 +0000

Type	Values Removed	Values Added
Weaknesses	CWE-788

Tue, 30 Jun 2026 15:15:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-788

Tue, 30 Jun 2026 14:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-125
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Tue, 30 Jun 2026 13:15:00 +0000

Type	Values Removed	Values Added
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
Title		Insufficient input validation leading to memory overread
References		https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604
Metrics		cvssV4_0 `{'score': 8.8, 'vector': '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'}`

MITRE

Status: PUBLISHED

Assigner: NetScaler

Published: 2026-06-30T12:33:08.999Z

Updated: 2026-06-30T13:43:41.903Z

Reserved: 2026-05-13T00:35:53.452Z

Link: CVE-2026-8451

Vulnrichment

Updated: 2026-06-30T13:43:06.460Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-06-30T16:30:16Z

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-8451", "assignerOrgId": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5", "state": "PUBLISHED", "assignerShortName": "NetScaler", "dateReserved": "2026-05-13T00:35:53.452Z", "datePublished": "2026-06-30T12:33:08.999Z", "dateUpdated": "2026-06-30T13:43:41.903Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5", "shortName": "NetScaler", "dateUpdated": "2026-06-30T12:55:53.680Z"}, "title": "Insufficient input validation leading to memory overread", "datePublic": "2026-06-30T12:00:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "description": "awe-125"}]}], "affected": [{"vendor": "NetScaler", "product": "ADC", "versions": [{"status": "affected", "version": "14.1", "lessThan": "72.61", "versionType": "patch"}, {"status": "affected", "version": "13.1", "lessThan": "63.18", "versionType": "patch"}, {"status": "affected", "version": "14.1 FIPs", "lessThan": "72.61", "versionType": "patch"}, {"status": "affected", "version": "13.1 FIPS and NDcPP", "lessThan": "37.272", "versionType": "patch"}], "defaultStatus": "unaffected"}, {"vendor": "NetScaler", "product": "Gateway", "versions": [{"status": "affected", "version": "14.1", "lessThan": "72.61", "versionType": "patch"}, {"status": "affected", "version": "13.1", "lessThan": "63.18", "versionType": "patch"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "Insufficient input validation in\u00a0NetScaler ADC and NetScaler Gateway\u00a0leading to memory overread if\u00a0NetScaler ADC or NetScaler Gateway is configured as a SAML IDP", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<span>Insufficient input validation in </span><span>NetScaler ADC and NetScaler Gateway</span><span> leading to memory overread if </span><span>NetScaler ADC or NetScaler Gateway is configured as a SAML IDP</span><br>"}]}], "references": [{"url": "https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 8.8, "vectorString": "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"}}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.2"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-125", "lang": "en", "description": "CWE-125 Out-of-bounds Read"}]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-30T13:43:33.940474Z", "id": "CVE-2026-8451", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-30T13:43:41.903Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-8451", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-06-30T13:43:33.940474Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-125", "description": "CWE-125 Out-of-bounds Read"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-30T13:43:06.460Z"}}], "cna": {"title": "Insufficient input validation leading to memory overread", "source": {"discovery": "UNKNOWN"}, "metrics": [{"format": "CVSS", "cvssV4_0": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.8, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "LOW", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "NetScaler", "product": "ADC", "versions": [{"status": "affected", "version": "14.1", "lessThan": "72.61", "versionType": "patch"}, {"status": "affected", "version": "13.1", "lessThan": "63.18", "versionType": "patch"}, {"status": "affected", "version": "14.1 FIPs", "lessThan": "72.61", "versionType": "patch"}, {"status": "affected", "version": "13.1 FIPS and NDcPP", "lessThan": "37.272", "versionType": "patch"}], "defaultStatus": "unaffected"}, {"vendor": "NetScaler", "product": "Gateway", "versions": [{"status": "affected", "version": "14.1", "lessThan": "72.61", "versionType": "patch"}, {"status": "affected", "version": "13.1", "lessThan": "63.18", "versionType": "patch"}], "defaultStatus": "unaffected"}], "datePublic": "2026-06-30T12:00:00.000Z", "references": [{"url": "https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604"}], "x_generator": {"engine": "Vulnogram 1.0.2"}, "descriptions": [{"lang": "en", "value": "Insufficient input validation in\u00a0NetScaler ADC and NetScaler Gateway\u00a0leading to memory overread if\u00a0NetScaler ADC or NetScaler Gateway is configured as a SAML IDP", "supportingMedia": [{"type": "text/html", "value": "<span>Insufficient input validation in </span><span>NetScaler ADC and NetScaler Gateway</span><span> leading to memory overread if </span><span>NetScaler ADC or NetScaler Gateway is configured as a SAML IDP</span><br>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "awe-125"}]}], "providerMetadata": {"orgId": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5", "shortName": "NetScaler", "dateUpdated": "2026-06-30T12:55:53.680Z"}}}, "cveMetadata": {"cveId": "CVE-2026-8451", "state": "PUBLISHED", "dateUpdated": "2026-06-30T13:43:41.903Z", "dateReserved": "2026-05-13T00:35:53.452Z", "assignerOrgId": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5", "datePublished": "2026-06-30T12:33:08.999Z", "assignerShortName": "NetScaler"}, "dataVersion": "5.2"}