CVE-2026-88779

{"id": "CVE-2026-88779", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-88779", "role": "CISA Coordinator", "options": [{"exploitation": "active"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-04T00:00:00+00:00"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.7, "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:N/VI:N/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "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": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5", "affectedData": [{"vendor": "NetScaler", "product": "ADC", "versions": [{"status": "affected", "version": "0", "lessThan": "14.1-73.41", "versionType": "Patch"}, {"status": "affected", "version": "0", "lessThan": "13.1-64.28", "versionType": "Patch"}, {"status": "affected", "version": "0", "lessThan": "14.1-73.41 FIPS", "versionType": "Patch"}, {"status": "affected", "version": "0", "lessThan": "13.1-37.282", "versionType": "Patch"}], "defaultStatus": "unaffected"}, {"vendor": "NetScaler", "product": "Gateway", "versions": [{"status": "affected", "version": "0", "lessThan": "14.1-73.41", "versionType": "Patch"}, {"status": "affected", "version": "0", "lessThan": "13.1-64.28", "versionType": "Patch"}], "defaultStatus": "unaffected"}]}], "published": "2026-10-04T04:16:43.680", "references": [{"url": "https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697174", "tags": ["Vendor Advisory"], "source": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5"}, {"url": "https://community.citrix.com/techzone-blogs/110_security-updates/understanding-and-addressing-cve-2026-88779-in-citrix-netscaler-adc-and-citrix-netscaler-gateway/", "tags": ["Mitigation", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}, {"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-88779", "tags": ["US Government Resource"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-119"}]}], "descriptions": [{"lang": "en", "value": "Vulnerability in NetScaler ADC and NetScaler Gateway.\n\nThis issue affects ADC: before 14.1-73.41, before 13.1-64.28, before 14.1-73.41 FIPS, and before 13.1-37.282; Gateway: before 14.1-73.41 and before 13.1-64.28."}], "lastModified": "2026-10-05T13:35:24.663", "cisaActionDue": "2026-10-07", "cisaExploitAdd": "2026-10-04", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*", "vulnerable": true, "matchCriteriaId": "3BBEE3C6-8CDE-4E13-8D7F-1DC21DE216B8", "versionEndExcluding": "13.1-37.282", "versionStartIncluding": "13.1"}, {"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:*", "vulnerable": true, "matchCriteriaId": "6F6A3D5D-1861-4974-B091-26E87FB1D6B4", "versionEndExcluding": "13.1-37.282", "versionStartIncluding": "13.1"}, {"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*", "vulnerable": true, "matchCriteriaId": "1A3802BF-8836-4B1C-9C5E-BE6492D42847", "versionEndExcluding": "13.1-64.28", "versionStartIncluding": "13.1"}, {"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*", "vulnerable": true, "matchCriteriaId": "92D219C6-E418-4AC1-9D9D-20F939914F0B", "versionEndExcluding": "14.1-73.41", "versionStartIncluding": "14.1"}, {"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*", "vulnerable": true, "matchCriteriaId": "EBB3AD2A-AAE0-4A56-A36D-A327EB39792A", "versionEndIncluding": "14.1-73.41", "versionStartIncluding": "14.1-66.68"}, {"criteria": "cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C4B364B5-3ED9-4C84-9D09-6C79D7A66E94", "versionEndExcluding": "13.1-64.28", "versionStartIncluding": "13.1"}, {"criteria": "cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "33BB8BC4-DFDF-4760-9C92-129615BE7831", "versionEndExcluding": "14.1-73.41", "versionStartIncluding": "14.1"}], "operator": "OR"}]}], "sourceIdentifier": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5", "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's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.", "cisaVulnerabilityName": "Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability"}