CVE-2025-7776
Status: AnalyzedHigh (8.8)—
Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of Service in NetScaler ADC and NetScaler Gateway when NetScaler is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) with PCoIP Profile bounded to it
CVSS
- Version: 4.0
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/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
- Base score: 8.8
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 6.90%
- Percentile among all scored CVEs: 94
- Score date: 9/30/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
Affected technologies (2)
CWEs
- CWE-119
References
Raw JSON (NVD)
Show
{
"id": "CVE-2025-7776",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2025-7776",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2025-08-27T14:33:04.448715Z"
}
}
],
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 9.8,
"attackVector": "NETWORK",
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 3.9
}
],
"cvssMetricV40": [
{
"type": "Secondary",
"source": "secure@citrix.com",
"cvssData": {
"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:L/VI:L/VA:H/SC:N/SI:N/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",
"exploitMaturity": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"subIntegrityImpact": "NONE",
"vulnIntegrityImpact": "LOW",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"subAvailabilityImpact": "LOW",
"vulnAvailabilityImpact": "HIGH",
"availabilityRequirement": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"subConfidentialityImpact": "NONE",
"vulnConfidentialityImpact": "LOW",
"confidentialityRequirement": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED"
}
}
]
},
"affected": [
{
"source": "secure@citrix.com",
"affectedData": [
{
"vendor": "NetScaler",
"product": "ADC",
"versions": [
{
"status": "affected",
"version": "14.1",
"lessThan": "47.48",
"versionType": "patch"
},
{
"status": "affected",
"version": "13.1",
"lessThan": "59.22",
"versionType": "patch"
},
{
"status": "affected",
"version": "13.1 FIPS and NDcPP",
"lessThan": "37.241",
"versionType": "patch"
},
{
"status": "affected",
"version": "12.1 FIPS and NDcPP",
"lessThan": "55.330",
"versionType": "patch"
}
],
"defaultStatus": "unaffected"
},
{
"vendor": "NetScaler",
"product": "Gateway",
"versions": [
{
"status": "affected",
"version": "14.1",
"lessThan": "47.48",
"versionType": "patch"
},
{
"status": "affected",
"version": "13.1",
"lessThan": "59.22",
"versionType": "patch"
},
{
"status": "affected",
"version": "13.1 FIPS and NDcPP",
"lessThan": "37.241",
"versionType": "patch"
},
{
"status": "affected",
"version": "12.1 FIPS and NDcPP",
"lessThan": "55.330",
"versionType": "patch"
}
],
"defaultStatus": "unaffected"
}
]
}
],
"published": "2025-08-26T13:15:33.193",
"references": [
{
"url": "https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX694938",
"tags": [
"Vendor Advisory"
],
"source": "secure@citrix.com"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "secure@citrix.com",
"description": [
{
"lang": "en",
"value": "CWE-119"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of Service in NetScaler ADC and NetScaler Gateway when NetScaler is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) with PCoIP Profile bounded to it"
},
{
"lang": "es",
"value": "Vulnerabilidad de desbordamiento de memoria que genera un comportamiento impredecible o erróneo y una denegación de servicio en NetScaler ADC y NetScaler Gateway cuando NetScaler está configurado como un Gateway (servidor virtual VPN, proxy ICA, CVPN, proxy RDP) con un perfil PCoIP vinculado a él."
}
],
"lastModified": "2026-06-17T10:05:38.193",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5920186A-2278-4C5E-A2EE-047C4F6FAACD",
"versionEndExcluding": "12.1-55.330",
"versionStartIncluding": "12.1"
},
{
"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E09EC98B-E057-4FF7-9B18-EF460A29B876",
"versionEndExcluding": "12.1-55.330",
"versionStartIncluding": "12.1"
},
{
"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0096548F-A846-4D80-A4C6-71389543630F",
"versionEndExcluding": "13.1-37.241",
"versionStartIncluding": "13.1"
},
{
"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F40E29F2-8013-41A8-91A5-848FE6365876",
"versionEndExcluding": "13.1-37.241",
"versionStartIncluding": "13.1"
},
{
"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C2009493-AAFD-4090-84BC-5217A860E42A",
"versionEndExcluding": "13.1-59.22",
"versionStartIncluding": "13.1"
},
{
"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*",
"vulnerable": true,
"matchCriteriaId": "3487EADF-F387-4DD4-B600-B1EBC416632E",
"versionEndExcluding": "14.1-47.48",
"versionStartIncluding": "14.1"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "DBA34500-BFE6-4B33-A52B-326C4C2069B1",
"versionEndExcluding": "13.1-59.22",
"versionStartIncluding": "13.1"
},
{
"criteria": "cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "004E06F6-0ABF-4414-B2A2-8834C1E6107D",
"versionEndExcluding": "14.1-47.48",
"versionStartIncluding": "14.1"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "secure@citrix.com"
}