CVE-2023-4966

{"id": "CVE-2023-4966", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "secure@citrix.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.4, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.5, "exploitabilityScore": 3.9}, {"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:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2023-10-10T14:15:10.977", "references": [{"url": "http://packetstormsecurity.com/files/175323/Citrix-Bleed-Session-Token-Leakage-Proof-Of-Concept.html", "tags": ["Third Party Advisory", "VDB Entry"], "source": "secure@citrix.com"}, {"url": "https://support.citrix.com/article/CTX579459", "tags": ["Vendor Advisory"], "source": "secure@citrix.com"}, {"url": "http://packetstormsecurity.com/files/175323/Citrix-Bleed-Session-Token-Leakage-Proof-Of-Concept.html", "tags": ["Third Party Advisory", "VDB Entry"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://support.citrix.com/article/CTX579459", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-4966", "tags": ["US Government Resource"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "secure@citrix.com", "description": [{"lang": "en", "value": "CWE-119"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "Sensitive information disclosure\u00a0in NetScaler ADC and NetScaler Gateway when configured as a\u00a0Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy)\u00a0or\u00a0AAA \u202fvirtual\u202fserver."}, {"lang": "es", "value": "Divulgaci\u00f3n de informaci\u00f3n confidencial en NetScaler ADC y NetScaler Gateway cuando se configura como Gateway (servidor virtual VPN, ICA Proxy, CVPN, RDP Proxy) o servidor \"virtual\" AAA."}], "lastModified": "2025-10-24T13:42:55.550", "cisaActionDue": "2023-11-08", "cisaExploitAdd": "2023-10-18", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*", "vulnerable": true, "matchCriteriaId": "492BEB4B-7A4B-47C2-93D1-2B0683AA3A20", "versionEndExcluding": "12.1-55.300", "versionStartIncluding": "12.1"}, {"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:*", "vulnerable": true, "matchCriteriaId": "81EF12C2-4197-4C0D-BE11-556F05DAD646", "versionEndExcluding": "12.1-55.300", "versionStartIncluding": "12.1"}, {"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*", "vulnerable": true, "matchCriteriaId": "9EEC53B2-686A-4C6F-98DE-5D6AE804B0A8", "versionEndExcluding": "13.0-92.19", "versionStartIncluding": "13.0"}, {"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*", "vulnerable": true, "matchCriteriaId": "109301A8-9ADD-4A49-9C45-D21A4DA840E9", "versionEndExcluding": "13.1-37.164", "versionStartIncluding": "13.1"}, {"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*", "vulnerable": true, "matchCriteriaId": "5C1739C5-48C1-46BC-A524-B4CC4C5B6436", "versionEndExcluding": "13.1-49.15", "versionStartIncluding": "13.1"}, {"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*", "vulnerable": true, "matchCriteriaId": "9148C36D-98B4-4166-8B9A-449EA86BA4B1", "versionEndExcluding": "14.1-8.50", "versionStartIncluding": "14.1"}, {"criteria": "cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5FB1412D-F8D8-4592-A8A9-C1B841B93D5E", "versionEndExcluding": "13.0-92.19", "versionStartIncluding": "13.0"}, {"criteria": "cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "28A08B32-D145-499F-866E-BEEEDEBB2901", "versionEndExcluding": "13.1-49.15", "versionStartIncluding": "13.1"}, {"criteria": "cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4F1610E6-FE48-4339-8E74-765E0517E33D", "versionEndExcluding": "14.1-8.50", "versionStartIncluding": "14.1"}], "operator": "OR"}]}], "sourceIdentifier": "secure@citrix.com", "cisaRequiredAction": "Apply mitigations and kill all active and persistent sessions per vendor instructions [https://www.netscaler.com/blog/news/cve-2023-4966-critical-security-update-now-available-for-netscaler-adc-and-netscaler-gateway/] OR discontinue use of the product if mitigations are unavailable.", "cisaVulnerabilityName": "Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability"}