CVE-2026-8452 (GCVE-0-2026-8452)
Vulnerability from cvelistv5
Published
2026-06-30 12:41
Modified
2026-08-27 03:56
Severity ?
VLAI Severity ?
EPSS score ?
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
CISA Known Exploited Vulnerability
Data from the CISA Known Exploited Vulnerabilities Catalog
Date added: 2026-08-26
Due date: 2026-08-29
Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (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's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Used in ransomware: Unknown
Notes: https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-8452
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-8452",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-26T00:00:00+00:00",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2026-08-26",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-8452"
},
"type": "kev"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-119",
"description": "CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-27T03:56:34.886Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-8452"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-08-26T00:00:00.000Z",
"value": "CVE-2026-8452 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"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"
}
]
}
],
"datePublic": "2026-06-30T12:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cspan\u003eMemory overflow vulnerability\u0026nbsp;\u003c/span\u003e\u003cspan\u003eNetScaler ADC and NetScaler Gateway\u0026nbsp;\u003c/span\u003e\u003cspan\u003eleading to unpredictable or erroneous behavior and Denial of Service if the a\u003c/span\u003e\u003cspan\u003eppliance is configured as a\u0026nbsp;\u003c/span\u003e\u003cspan\u003eGateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) or \u003c/span\u003e\u003cspan\u003eAAA virtual server\u003c/span\u003e\u003cbr\u003e"
}
],
"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"
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"exploitMaturity": "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",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "LOW",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-30T12:57:25.158Z",
"orgId": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5",
"shortName": "NetScaler"
},
"references": [
{
"url": "https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of Service",
"x_generator": {
"engine": "Vulnogram 1.0.2"
}
}
},
"cveMetadata": {
"assignerOrgId": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5",
"assignerShortName": "NetScaler",
"cveId": "CVE-2026-8452",
"datePublished": "2026-06-30T12:41:07.622Z",
"dateReserved": "2026-05-13T00:35:55.317Z",
"dateUpdated": "2026-08-27T03:56:34.886Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"cisa_known_exploited": {
"cveID": "CVE-2026-8452",
"cwes": "[\"CWE-119\"]",
"dateAdded": "2026-08-26",
"dueDate": "2026-08-29",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-8452",
"product": "NetScaler ADC and NetScaler Gateway",
"requiredAction": "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.",
"shortDescription": "Citrix NetScaler ADC and NetScaler Gateway contain an improper restriction of operations within the bounds of a memory buffer vulnerability which could lead to denial of service. ",
"vendorProject": "Citrix",
"vulnerabilityName": "Citrix NetScaler ADC and NetScaler Gateway Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-8452\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"active\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-26T17:44:29.767073Z\"}}}, {\"other\": {\"type\": \"kev\", \"content\": {\"dateAdded\": \"2026-08-26\", \"reference\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-8452\"}}}], \"references\": [{\"url\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-8452\", \"tags\": [\"government-resource\"]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-119\", \"description\": \"CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-06-30T13:37:00.513Z\"}, \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-08-26T00:00:00.000Z\", \"value\": \"CVE-2026-8452 added to CISA KEV\"}]}], \"cna\": {\"title\": \"Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of Service\", \"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:L/SI:L/SA:L\", \"exploitMaturity\": \"NOT_DEFINED\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"LOW\", \"vulnIntegrityImpact\": \"LOW\", \"subAvailabilityImpact\": \"LOW\", \"vulnAvailabilityImpact\": \"HIGH\", \"subConfidentialityImpact\": \"LOW\", \"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\": \"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\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cspan\u003eMemory overflow vulnerability\u0026nbsp;\u003c/span\u003e\u003cspan\u003eNetScaler ADC and NetScaler Gateway\u0026nbsp;\u003c/span\u003e\u003cspan\u003eleading to unpredictable or erroneous behavior and Denial of Service if the a\u003c/span\u003e\u003cspan\u003eppliance is configured as a\u0026nbsp;\u003c/span\u003e\u003cspan\u003eGateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) or \u003c/span\u003e\u003cspan\u003eAAA virtual server\u003c/span\u003e\u003cbr\u003e\", \"base64\": false}]}], \"providerMetadata\": {\"orgId\": \"50a63c94-1ea7-4568-8c11-eb79e7c5a2b5\", \"shortName\": \"NetScaler\", \"dateUpdated\": \"2026-06-30T12:57:25.158Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-8452\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-27T03:56:34.886Z\", \"dateReserved\": \"2026-05-13T00:35:55.317Z\", \"assignerOrgId\": \"50a63c94-1ea7-4568-8c11-eb79e7c5a2b5\", \"datePublished\": \"2026-06-30T12:41:07.622Z\", \"assignerShortName\": \"NetScaler\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…