FKIE_CVE-2026-8452
Vulnerability from fkie_nvd - Published: 2026-06-30 13:19 - Updated: 2026-08-27 04:18
Severity
Summary
Memory overflow vulnerability NetScaler ADC and NetScaler Gateway leading to unpredictable or erroneous behavior and Denial of Service if the appliance is configured as a Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server
References
Impacted products
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "ADC",
"vendor": "NetScaler",
"versions": [
{
"lessThan": "72.61",
"status": "affected",
"version": "14.1",
"versionType": "patch"
},
{
"lessThan": "63.18",
"status": "affected",
"version": "13.1",
"versionType": "patch"
},
{
"lessThan": "72.61",
"status": "affected",
"version": "14.1 FIPS",
"versionType": "patch"
},
{
"lessThan": "37.272",
"status": "affected",
"version": "13.1 FIPS and NDcPP",
"versionType": "patch"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Gateway",
"vendor": "NetScaler",
"versions": [
{
"lessThan": "72.61",
"status": "affected",
"version": "14.1",
"versionType": "patch"
},
{
"lessThan": "63.18",
"status": "affected",
"version": "13.1",
"versionType": "patch"
}
]
}
],
"source": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5"
}
],
"cisaActionDue": "2026-08-29",
"cisaExploitAdd": "2026-08-26",
"cisaRequiredAction": "Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA\u2019s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA\u2019s \u201cForensics Triage Requirements\u201d (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset\u0027s internet exposure and ensuring adherence to BOD 26-04 patching guidelines.",
"cisaVulnerabilityName": "Citrix NetScaler ADC and NetScaler Gateway Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability",
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*",
"matchCriteriaId": "D8189708-5190-45E3-BF9A-7A429E87DFE7",
"versionEndExcluding": "13.1-37.272",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:*",
"matchCriteriaId": "D93A5760-5C50-4786-B981-24A7B35C3055",
"versionEndExcluding": "13.1-37.272",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*",
"matchCriteriaId": "BC139A27-D7CE-4D92-9A1F-09713C4C9546",
"versionEndExcluding": "13.1-63.18",
"versionStartIncluding": "13.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*",
"matchCriteriaId": "0108075C-1047-449C-A707-F2532770C2AD",
"versionEndExcluding": "14.1-72.61",
"versionStartIncluding": "14.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:14.1-66.68:*:*:*:fips:*:*:*",
"matchCriteriaId": "A2BC089B-97D0-4FDB-A336-74409DCDC5E3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*",
"matchCriteriaId": "962D2276-7285-41E2-A867-D464AE11677F",
"versionEndExcluding": "13.1-63.18",
"versionStartIncluding": "13.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*",
"matchCriteriaId": "1591FBCE-57DD-416F-A858-E898B0946AB6",
"versionEndExcluding": "14.1-72.61",
"versionStartIncluding": "14.1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Memory overflow vulnerability\u00a0NetScaler ADC and NetScaler Gateway\u00a0leading to unpredictable or erroneous behavior and Denial of Service if the appliance is configured as a\u00a0Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server"
}
],
"id": "CVE-2026-8452",
"lastModified": "2026-08-27T04:18:00.787",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"cvssMetricV40": [
{
"cvssData": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityRequirement": "NOT_DEFINED",
"exploitMaturity": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "LOW",
"subConfidentialityImpact": "LOW",
"subIntegrityImpact": "LOW",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:H/SC:L/SI:L/SA:L/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",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "LOW",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-8452",
"options": [
{
"exploitation": "active"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-26T00:00:00+00:00",
"version": "2.0.3"
}
}
]
},
"published": "2026-06-30T13:19:33.450",
"references": [
{
"source": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5",
"tags": [
"Vendor Advisory"
],
"url": "https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604"
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"tags": [
"US Government Resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-8452"
}
],
"sourceIdentifier": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-119"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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