{"containers": {"cna": {"affected": [{"platforms": ["Windows"], "product": "Serv-U Managed File Transfer Server and Serv-U Secured FTP", "vendor": "SolarWinds", "versions": [{"lessThan": "15.2.3 HF1", "status": "affected", "version": "SolarWinds Serv-U", "versionType": "custom"}]}], "credits": [{"lang": "en", "value": "SolarWinds would like to thank the Microsoft Threat Intelligence Center (MSTIC) and Microsoft Offensive Security Research teams for reporting on the issue in a responsible manner."}], "datePublic": "2021-07-13T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "Microsoft discovered a remote code execution (RCE) vulnerability in the SolarWinds Serv-U product utilizing a Remote Memory Escape Vulnerability. If exploited, a threat actor may be able to gain privileged access to the machine hosting Serv-U Only. SolarWinds Serv-U Managed File Transfer and Serv-U Secure FTP for Windows before 15.2.3 HF2 are affected by this vulnerability."}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"description": "Memory Escape Vulnerability in Solarwinds Serv-U", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-07-14T20:55:25.000Z", "orgId": "49f11609-934d-4621-84e6-e02e032104d6", "shortName": "SolarWinds"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35211"}, {"tags": ["x_refsource_MISC"], "url": "https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit"}], "solutions": [{"lang": "en", "value": "SolarWinds has released a hotfix 15.2.3 HF2 It is suggested to upgrade to the latest hotfix as soon as possible"}], "source": {"defect": ["CVE-2021-35211"], "discovery": "EXTERNAL"}, "title": "Serv-U Remote Memory Escape Vulnerability", "workarounds": [{"lang": "en", "value": "SolarWinds advises to disconnect Serv-U Server from internet until patched."}], "x_generator": {"engine": "Vulnogram 0.0.9"}, "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "psirt@solarwinds.com", "DATE_PUBLIC": "2021-07-13T16:16:00.000Z", "ID": "CVE-2021-35211", "STATE": "PUBLIC", "TITLE": "Serv-U Remote Memory Escape Vulnerability"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Serv-U Managed File Transfer Server and Serv-U Secured FTP", "version": {"version_data": [{"platform": "Windows", "version_affected": "<", "version_name": "SolarWinds Serv-U", "version_value": "15.2.3 HF1"}]}}]}, "vendor_name": "SolarWinds"}]}}, "credit": [{"lang": "eng", "value": "SolarWinds would like to thank the Microsoft Threat Intelligence Center (MSTIC) and Microsoft Offensive Security Research teams for reporting on the issue in a responsible manner."}], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Microsoft discovered a remote code execution (RCE) vulnerability in the SolarWinds Serv-U product utilizing a Remote Memory Escape Vulnerability. If exploited, a threat actor may be able to gain privileged access to the machine hosting Serv-U Only. SolarWinds Serv-U Managed File Transfer and Serv-U Secure FTP for Windows before 15.2.3 HF2 are affected by this vulnerability."}]}, "generator": {"engine": "Vulnogram 0.0.9"}, "impact": {"cvss": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Memory Escape Vulnerability in Solarwinds Serv-U"}]}]}, "references": {"reference_data": [{"name": "https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35211", "refsource": "MISC", "url": "https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35211"}, {"name": "https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit", "refsource": "MISC", "url": "https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit"}]}, "solution": [{"lang": "en", "value": "SolarWinds has released a hotfix 15.2.3 HF2 It is suggested to upgrade to the latest hotfix as soon as possible"}], "source": {"defect": ["CVE-2021-35211"], "discovery": "EXTERNAL"}, "work_around": [{"lang": "en", "value": "SolarWinds advises to disconnect Serv-U Server from internet until patched."}]}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T00:33:51.183Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35211"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit"}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-35211", "role": "CISA Coordinator", "options": [{"Exploitation": "active"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2025-02-04T19:06:30.616456Z"}}}, {"other": {"type": "kev", "content": {"dateAdded": "2021-11-03", "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-35211"}}}], "references": [{"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-35211", "tags": ["government-resource"]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-787", "description": "CWE-787 Out-of-bounds Write"}]}], "timeline": [{"time": "2021-11-03T00:00:00+00:00", "lang": "en", "value": "CVE-2021-35211 added to CISA KEV"}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-21T23:25:40.369Z"}}]}, "cveMetadata": {"assignerOrgId": "49f11609-934d-4621-84e6-e02e032104d6", "assignerShortName": "SolarWinds", "cveId": "CVE-2021-35211", "datePublished": "2021-07-14T20:55:25.167Z", "dateReserved": "2021-06-22T00:00:00.000Z", "dateUpdated": "2025-10-21T23:25:40.369Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"containers": {"cna": {"affected": [{"platforms": ["Windows"], "product": "Serv-U Managed File Transfer Server and Serv-U Secured FTP", "vendor": "SolarWinds", "versions": [{"lessThan": "15.2.3 HF1", "status": "affected", "version": "SolarWinds Serv-U", "versionType": "custom"}]}], "credits": [{"lang": "en", "value": "SolarWinds would like to thank the Microsoft Threat Intelligence Center (MSTIC) and Microsoft Offensive Security Research teams for reporting on the issue in a responsible manner."}], "datePublic": "2021-07-13T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "Microsoft discovered a remote code execution (RCE) vulnerability in the SolarWinds Serv-U product utilizing a Remote Memory Escape Vulnerability. If exploited, a threat actor may be able to gain privileged access to the machine hosting Serv-U Only. SolarWinds Serv-U Managed File Transfer and Serv-U Secure FTP for Windows before 15.2.3 HF2 are affected by this vulnerability."}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"description": "Memory Escape Vulnerability in Solarwinds Serv-U", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-07-14T20:55:25.000Z", "orgId": "49f11609-934d-4621-84e6-e02e032104d6", "shortName": "SolarWinds"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35211"}, {"tags": ["x_refsource_MISC"], "url": "https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit"}], "solutions": [{"lang": "en", "value": "SolarWinds has released a hotfix 15.2.3 HF2 It is suggested to upgrade to the latest hotfix as soon as possible"}], "source": {"defect": ["CVE-2021-35211"], "discovery": "EXTERNAL"}, "title": "Serv-U Remote Memory Escape Vulnerability", "workarounds": [{"lang": "en", "value": "SolarWinds advises to disconnect Serv-U Server from internet until patched."}], "x_generator": {"engine": "Vulnogram 0.0.9"}, "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "psirt@solarwinds.com", "DATE_PUBLIC": "2021-07-13T16:16:00.000Z", "ID": "CVE-2021-35211", "STATE": "PUBLIC", "TITLE": "Serv-U Remote Memory Escape Vulnerability"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Serv-U Managed File Transfer Server and Serv-U Secured FTP", "version": {"version_data": [{"platform": "Windows", "version_affected": "<", "version_name": "SolarWinds Serv-U", "version_value": "15.2.3 HF1"}]}}]}, "vendor_name": "SolarWinds"}]}}, "credit": [{"lang": "eng", "value": "SolarWinds would like to thank the Microsoft Threat Intelligence Center (MSTIC) and Microsoft Offensive Security Research teams for reporting on the issue in a responsible manner."}], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Microsoft discovered a remote code execution (RCE) vulnerability in the SolarWinds Serv-U product utilizing a Remote Memory Escape Vulnerability. If exploited, a threat actor may be able to gain privileged access to the machine hosting Serv-U Only. SolarWinds Serv-U Managed File Transfer and Serv-U Secure FTP for Windows before 15.2.3 HF2 are affected by this vulnerability."}]}, "generator": {"engine": "Vulnogram 0.0.9"}, "impact": {"cvss": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Memory Escape Vulnerability in Solarwinds Serv-U"}]}]}, "references": {"reference_data": [{"name": "https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35211", "refsource": "MISC", "url": "https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35211"}, {"name": "https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit", "refsource": "MISC", "url": "https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit"}]}, "solution": [{"lang": "en", "value": "SolarWinds has released a hotfix 15.2.3 HF2 It is suggested to upgrade to the latest hotfix as soon as possible"}], "source": {"defect": ["CVE-2021-35211"], "discovery": "EXTERNAL"}, "work_around": [{"lang": "en", "value": "SolarWinds advises to disconnect Serv-U Server from internet until patched."}]}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T00:33:51.183Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35211"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit"}]}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-35211", "role": "CISA Coordinator", "options": [{"Exploitation": "active"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2025-02-04T19:06:30.616456Z"}}}, {"other": {"type": "kev", "content": {"dateAdded": "2021-11-03", "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-35211"}}}], "timeline": [{"time": "2021-11-03T00:00:00+00:00", "lang": "en", "value": "CVE-2021-35211 added to CISA KEV"}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-787", "description": "CWE-787 Out-of-bounds Write"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-02-04T19:06:04.170Z"}}]}, "cveMetadata": {"assignerOrgId": "49f11609-934d-4621-84e6-e02e032104d6", "assignerShortName": "SolarWinds", "cveId": "CVE-2021-35211", "datePublished": "2021-07-14T20:55:25.167Z", "dateReserved": "2021-06-22T00:00:00.000Z", "dateUpdated": "2025-07-30T01:38:06.270Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"cisaActionDue": "2021-11-17", "cisaExploitAdd": "2021-11-03", "cisaRequiredAction": "Apply updates per vendor instructions.", "cisaVulnerabilityName": "SolarWinds Serv-U Remote Code Execution Vulnerability", "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:solarwinds:serv-u:*:*:*:*:*:*:*:*", "matchCriteriaId": "66A68531-7831-4875-B0AB-215C3E5A62B6", "versionEndExcluding": "15.2.3", "vulnerable": true}, {"criteria": "cpe:2.3:a:solarwinds:serv-u:15.2.3:-:*:*:*:*:*:*", "matchCriteriaId": "9E8B32A1-90C1-4901-9B66-FA72E5787450", "vulnerable": true}, {"criteria": "cpe:2.3:a:solarwinds:serv-u:15.2.3:hotfix1:*:*:*:*:*:*", "matchCriteriaId": "92569E9A-911C-4704-A962-047FF5E0E2CF", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Microsoft discovered a remote code execution (RCE) vulnerability in the SolarWinds Serv-U product utilizing a Remote Memory Escape Vulnerability. If exploited, a threat actor may be able to gain privileged access to the machine hosting Serv-U Only. SolarWinds Serv-U Managed File Transfer and Serv-U Secure FTP for Windows before 15.2.3 HF2 are affected by this vulnerability."}, {"lang": "es", "value": "Microsoft descubri\u00f3 una vulnerabilidad de ejecuci\u00f3n de c\u00f3digo remota (RCE) en el producto SolarWinds Serv-U usando una Vulnerabilidad de Escape de Memoria Remota. Si es explotado, un actor de la amenaza puede ser capaz de obtener acceso privilegiado a la m\u00e1quina que aloja Serv-U solamente. SolarWinds Serv-U Managed File Transfer y Serv-U Secure FTP para Windows versiones anteriores a 15.2.3 HF2 est\u00e1n afectados por esta vulnerabilidad"}], "id": "CVE-2021-35211", "lastModified": "2025-10-22T00:17:38.573", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 10.0, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.0, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 6.0, "source": "psirt@solarwinds.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 10.0, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 6.0, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-07-14T21:15:08.090", "references": [{"source": "psirt@solarwinds.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit"}, {"source": "psirt@solarwinds.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35211"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35211"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-35211"}], "sourceIdentifier": "psirt@solarwinds.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-787"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{}