{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-5777", "assignerOrgId": "e437aed5-38e0-4fa3-a98b-cb73e7acaec6", "state": "PUBLISHED", "assignerShortName": "Citrix", "dateReserved": "2025-06-06T06:14:02.358Z", "datePublished": "2025-06-17T12:29:34.506Z", "dateUpdated": "2026-10-07T17:58:25.623Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "ADC", "vendor": "NetScaler", "versions": [{"lessThan": "43.56", "status": "affected", "version": "14.1", "versionType": "patch"}, {"lessThan": "58.32", "status": "affected", "version": "13.1", "versionType": "patch"}]}, {"defaultStatus": "unaffected", "product": "Gateway", "vendor": "NetScaler", "versions": [{"lessThan": "43.56", "status": "affected", "version": "14.1", "versionType": "patch"}, {"lessThan": "58.32", "status": "affected", "version": "13.1", "versionType": "patch"}]}], "datePublic": "2025-06-17T12:25:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<span style=\"background-color: rgb(255, 255, 255);\"><span style=\"background-color: rgb(255, 255, 255);\">Insufficient input validation leading to memory overread when the</span>&nbsp;</span><span style=\"background-color: rgb(255, 255, 255);\">NetScaler is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server</span>"}], "value": "Insufficient input validation leading to memory overread when the\u00a0NetScaler is configured as a Gateway (VPN virtual server, 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": 9.3, "baseSeverity": "CRITICAL", "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:H/VA:H/SC:L/SI:L/SA:L", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-125", "description": "CWE-125 Out-of-bounds Read", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "e437aed5-38e0-4fa3-a98b-cb73e7acaec6", "shortName": "Citrix", "dateUpdated": "2025-06-24T00:57:12.458Z"}, "references": [{"url": "https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX693420"}], "source": {"discovery": "UNKNOWN"}, "title": "NetScaler ADC and NetScaler Gateway - Insufficient input validation leading to memory overread", "x_generator": {"engine": "Vulnogram 0.2.0"}}, "adp": [{"references": [{"url": "https://doublepulsar.com/citrixbleed-2-exploitation-started-mid-june-how-to-spot-it-f3106392aa71", "tags": ["third-party-advisory", "technical-description", "signature"]}, {"url": "https://reliaquest.com/blog/threat-spotlight-citrix-bleed-2-vulnerability-in-netscaler-adc-gateway-devices/", "tags": ["media-coverage"]}, {"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-5777", "tags": ["government-resource"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-04T03:55:50.973198Z", "id": "CVE-2025-5777", "options": [{"Exploitation": "active"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}, {"other": {"type": "kev", "content": {"dateAdded": "2025-07-10", "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-5777"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-07T17:58:25.623Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-08-13T18:49:26.791Z"}, "references": [{"url": "https://www.bleepingcomputer.com/news/security/cisa-tags-citrix-bleed-2-as-exploited-gives-agencies-a-day-to-patch/"}, {"url": "https://labs.watchtowr.com/how-much-more-must-we-bleed-citrix-netscaler-memory-disclosure-citrixbleed-2-cve-2025-5777/"}, {"url": "https://www.theregister.com/2025/07/10/cisa_citrixbleed_kev/"}, {"url": "https://horizon3.ai/attack-research/attack-blogs/cve-2025-5777-citrixbleed-2-write-up-maybe/"}, {"url": "https://www.netscaler.com/blog/news/netscaler-critical-security-updates-for-cve-2025-6543-and-cve-2025-5777/"}, {"url": "https://citrixbleed.com"}], "title": "CVE Program Container", "x_generator": {"engine": "ADPogram 0.0.1"}}]}}

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-5777", "assignerOrgId": "e437aed5-38e0-4fa3-a98b-cb73e7acaec6", "state": "PUBLISHED", "assignerShortName": "Citrix", "dateReserved": "2025-06-06T06:14:02.358Z", "datePublished": "2025-06-17T12:29:34.506Z", "dateUpdated": "2026-10-07T17:58:25.623Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "ADC", "vendor": "NetScaler", "versions": [{"lessThan": "43.56", "status": "affected", "version": "14.1", "versionType": "patch"}, {"lessThan": "58.32", "status": "affected", "version": "13.1", "versionType": "patch"}]}, {"defaultStatus": "unaffected", "product": "Gateway", "vendor": "NetScaler", "versions": [{"lessThan": "43.56", "status": "affected", "version": "14.1", "versionType": "patch"}, {"lessThan": "58.32", "status": "affected", "version": "13.1", "versionType": "patch"}]}], "datePublic": "2025-06-17T12:25:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<span style=\"background-color: rgb(255, 255, 255);\"><span style=\"background-color: rgb(255, 255, 255);\">Insufficient input validation leading to memory overread when the</span>&nbsp;</span><span style=\"background-color: rgb(255, 255, 255);\">NetScaler is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server</span>"}], "value": "Insufficient input validation leading to memory overread when the\u00a0NetScaler is configured as a Gateway (VPN virtual server, 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": 9.3, "baseSeverity": "CRITICAL", "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:H/VA:H/SC:L/SI:L/SA:L", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-125", "description": "CWE-125 Out-of-bounds Read", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "e437aed5-38e0-4fa3-a98b-cb73e7acaec6", "shortName": "Citrix", "dateUpdated": "2025-06-24T00:57:12.458Z"}, "references": [{"url": "https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX693420"}], "source": {"discovery": "UNKNOWN"}, "title": "NetScaler ADC and NetScaler Gateway - Insufficient input validation leading to memory overread", "x_generator": {"engine": "Vulnogram 0.2.0"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-08-13T18:49:26.791Z"}, "references": [{"url": "https://www.bleepingcomputer.com/news/security/cisa-tags-citrix-bleed-2-as-exploited-gives-agencies-a-day-to-patch/"}, {"url": "https://labs.watchtowr.com/how-much-more-must-we-bleed-citrix-netscaler-memory-disclosure-citrixbleed-2-cve-2025-5777/"}, {"url": "https://www.theregister.com/2025/07/10/cisa_citrixbleed_kev/"}, {"url": "https://horizon3.ai/attack-research/attack-blogs/cve-2025-5777-citrixbleed-2-write-up-maybe/"}, {"url": "https://www.netscaler.com/blog/news/netscaler-critical-security-updates-for-cve-2025-6543-and-cve-2025-5777/"}, {"url": "https://citrixbleed.com"}], "title": "CVE Program Container", "x_generator": {"engine": "ADPogram 0.0.1"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-5777", "role": "CISA Coordinator", "options": [{"Exploitation": "active"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-08-04T03:55:50.973198Z"}}}, {"other": {"type": "kev", "content": {"dateAdded": "2025-07-10", "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-5777"}}}], "references": [{"url": "https://doublepulsar.com/citrixbleed-2-exploitation-started-mid-june-how-to-spot-it-f3106392aa71", "tags": ["third-party-advisory", "technical-description", "signature"]}, {"url": "https://reliaquest.com/blog/threat-spotlight-citrix-bleed-2-vulnerability-in-netscaler-adc-gateway-devices/", "tags": ["media-coverage"]}, {"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-5777", "tags": ["government-resource"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-06-17T13:57:47.854Z"}}]}}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "ADC", "vendor": "NetScaler", "versions": [{"lessThan": "43.56", "status": "affected", "version": "14.1", "versionType": "patch"}, {"lessThan": "58.32", "status": "affected", "version": "13.1", "versionType": "patch"}]}, {"defaultStatus": "unaffected", "product": "Gateway", "vendor": "NetScaler", "versions": [{"lessThan": "43.56", "status": "affected", "version": "14.1", "versionType": "patch"}, {"lessThan": "58.32", "status": "affected", "version": "13.1", "versionType": "patch"}]}], "source": "secure@citrix.com"}], "cisaActionDue": "2025-07-11", "cisaExploitAdd": "2025-07-10", "cisaRequiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.", "cisaVulnerabilityName": "Citrix NetScaler ADC and Gateway Out-of-Bounds Read Vulnerability", "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*", "matchCriteriaId": "D907BEC2-6930-4989-A6E1-847B4763BB12", "versionEndExcluding": "12.1-55.328", "versionStartIncluding": "12.1", "vulnerable": true}, {"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*", "matchCriteriaId": "7AF5A6EE-84A9-42AA-BC4B-7C3367D08CAF", "versionEndExcluding": "13.1-37.235", "versionStartIncluding": "13.1", "vulnerable": true}, {"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:*", "matchCriteriaId": "E219F46B-FCBE-4DA2-9094-6ED128E8AF66", "versionEndExcluding": "13.1-37.235", "versionStartIncluding": "13.1", "vulnerable": true}, {"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*", "matchCriteriaId": "48A64F62-2A5A-40CB-A507-A48497BD749A", "versionEndExcluding": "13.1-58.32", "versionStartIncluding": "13.1", "vulnerable": true}, {"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*", "matchCriteriaId": "6484AA47-81F8-4EE6-9F33-96DEFE2F66E1", "versionEndExcluding": "14.1-43.56", "versionStartIncluding": "14.1", "vulnerable": true}, {"criteria": "cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*", "matchCriteriaId": "2C86D66F-888F-4519-B700-9ADC4EE6913C", "versionEndExcluding": "13.1-58.32", "versionStartIncluding": "13.1", "vulnerable": true}, {"criteria": "cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*", "matchCriteriaId": "D4E61FAA-9EAB-4F9B-887F-C5DC0DA0C633", "versionEndExcluding": "14.1-43.56", "versionStartIncluding": "14.1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Insufficient input validation leading to memory overread when the\u00a0NetScaler is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server"}, {"lang": "es", "value": "Validaci\u00f3n de entrada insuficiente que provoca una sobrelectura de memoria en la interfaz de administraci\u00f3n de NetScaler, NetScaler ADC y NetScaler Gateway"}], "id": "CVE-2025-5777", "lastModified": "2026-10-08T10:35:53.547", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "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": 9.3, "baseSeverity": "CRITICAL", "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:H/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": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "secure@citrix.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-5777", "options": [{"exploitation": "active"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-08-04T03:55:50.973198Z", "version": "2.0.3"}}]}, "published": "2025-06-17T13:15:21.523", "references": [{"source": "secure@citrix.com", "tags": ["Vendor Advisory"], "url": "https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX693420"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Broken Link", "Third Party Advisory"], "url": "https://citrixbleed.com"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://horizon3.ai/attack-research/attack-blogs/cve-2025-5777-citrixbleed-2-write-up-maybe/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://labs.watchtowr.com/how-much-more-must-we-bleed-citrix-netscaler-memory-disclosure-citrixbleed-2-cve-2025-5777/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Press/Media Coverage", "Third Party Advisory"], "url": "https://www.bleepingcomputer.com/news/security/cisa-tags-citrix-bleed-2-as-exploited-gives-agencies-a-day-to-patch/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.netscaler.com/blog/news/netscaler-critical-security-updates-for-cve-2025-6543-and-cve-2025-5777/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Press/Media Coverage"], "url": "https://www.theregister.com/2025/07/10/cisa_citrixbleed_kev/"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Third Party Advisory"], "url": "https://doublepulsar.com/citrixbleed-2-exploitation-started-mid-june-how-to-spot-it-f3106392aa71"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Third Party Advisory"], "url": "https://reliaquest.com/blog/threat-spotlight-citrix-bleed-2-vulnerability-in-netscaler-adc-gateway-devices/"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["US Government Resource"], "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-5777"}], "sourceIdentifier": "secure@citrix.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "secure@citrix.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-908"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{"created": "2025-06-20T13:55:53.866996+00:00", "updated": "2025-06-20T13:55:53.867028+00:00", "vendors": ["netscaler", "netscaler$PRODUCT$adc", "netscaler$PRODUCT$gateway"]}