CVE-2019-5591 - Vulnerability Details - OpenCVE

A Default Configuration vulnerability in FortiOS may allow an unauthenticated attacker on the same subnet to intercept sensitive information by impersonating the LDAP server.

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

Access Vector Adjacent Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact None

Availability Impact None

This CVE is in the KEV database since Nov. 3, 2021.

The EPSS score is 0.02564.

Exploitation active

Automatable no

Technical Impact partial

Vendors	Products
Fortinet	Fortios

Configuration 1 [-]

cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*

No data.

No data.

Advisories

Source	ID	Title
EUVD	EUVD-2019-15166	A Default Configuration vulnerability in FortiOS may allow an unauthenticated attacker on the same subnet to intercept sensitive information by impersonating the LDAP server.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://www.fortiguard.com/psirt/FG-IR-19-037

History

Wed, 16 Jul 2025 13:45:00 +0000

Type	Values Removed	Values Added
Metrics	epss `{'score': 0.02431}`	epss `{'score': 0.03266}`

Wed, 23 Oct 2024 14:15:00 +0000

Type	Values Removed	Values Added
Metrics		kev `{'dateAdded': '2021-11-03'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'active', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: fortinet

Published: 2020-08-14T15:28:25.000Z

Updated: 2025-07-30T01:45:36.906Z

Reserved: 2019-01-07T00:00:00.000Z

Link: CVE-2019-5591

Vulnrichment

Updated: 2024-08-04T20:01:50.771Z

NVD

Status : Analyzed

Published: 2020-08-14T16:15:16.070

Modified: 2025-02-06T16:07:11.657

Link: CVE-2019-5591

Redhat

No data.

OpenCVE Enrichment

No data.

{"containers": {"cna": {"affected": [{"product": "Fortinet FortiOS", "vendor": "Fortinet", "versions": [{"status": "affected", "version": "FortiOS 6.2.0 and below."}]}], "descriptions": [{"lang": "en", "value": "A Default Configuration vulnerability in FortiOS may allow an unauthenticated attacker on the same subnet to intercept sensitive information by impersonating the LDAP server."}], "problemTypes": [{"descriptions": [{"description": "Information disclosure", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-04-07T20:38:12.000Z", "orgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8", "shortName": "fortinet"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://www.fortiguard.com/psirt/FG-IR-19-037"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "psirt@fortinet.com", "ID": "CVE-2019-5591", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Fortinet FortiOS", "version": {"version_data": [{"version_value": "FortiOS 6.2.0 and below."}]}}]}, "vendor_name": "Fortinet"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A Default Configuration vulnerability in FortiOS may allow an unauthenticated attacker on the same subnet to intercept sensitive information by impersonating the LDAP server."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Information disclosure"}]}]}, "references": {"reference_data": [{"name": "https://www.fortiguard.com/psirt/FG-IR-19-037", "refsource": "CONFIRM", "url": "https://www.fortiguard.com/psirt/FG-IR-19-037"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T20:01:50.771Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://www.fortiguard.com/psirt/FG-IR-19-037"}]}, {"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:A/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"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2019-5591", "role": "CISA Coordinator", "options": [{"Exploitation": "active"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-10-23T13:30:04.066109Z"}}}, {"other": {"type": "kev", "content": {"dateAdded": "2021-11-03", "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-5591"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-306", "description": "CWE-306 Missing Authentication for Critical Function"}]}], "timeline": [{"time": "2021-11-03T00:00:00+00:00", "lang": "en", "value": "CVE-2019-5591 added to CISA KEV"}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-07-30T01:45:36.906Z"}}]}, "cveMetadata": {"assignerOrgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8", "assignerShortName": "fortinet", "cveId": "CVE-2019-5591", "datePublished": "2020-08-14T15:28:25.000Z", "dateReserved": "2019-01-07T00:00:00.000Z", "dateUpdated": "2025-07-30T01:45:36.906Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://www.fortiguard.com/psirt/FG-IR-19-037", "tags": ["x_refsource_CONFIRM", "x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T20:01:50.771Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:A/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"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2019-5591", "role": "CISA Coordinator", "options": [{"Exploitation": "active"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-10-23T13:30:04.066109Z"}}}, {"other": {"type": "kev", "content": {"dateAdded": "2021-11-03", "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2019-5591"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-306", "description": "CWE-306 Missing Authentication for Critical Function"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-23T13:29:48.258Z"}}], "cna": {"affected": [{"vendor": "Fortinet", "product": "Fortinet FortiOS", "versions": [{"status": "affected", "version": "FortiOS 6.2.0 and below."}]}], "references": [{"url": "https://www.fortiguard.com/psirt/FG-IR-19-037", "tags": ["x_refsource_CONFIRM"]}], "descriptions": [{"lang": "en", "value": "A Default Configuration vulnerability in FortiOS may allow an unauthenticated attacker on the same subnet to intercept sensitive information by impersonating the LDAP server."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "text", "description": "Information disclosure"}]}], "providerMetadata": {"orgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8", "shortName": "fortinet", "dateUpdated": "2021-04-07T20:38:12"}, "x_legacyV4Record": {"affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"version": {"version_data": [{"version_value": "FortiOS 6.2.0 and below."}]}, "product_name": "Fortinet FortiOS"}]}, "vendor_name": "Fortinet"}]}}, "data_type": "CVE", "references": {"reference_data": [{"url": "https://www.fortiguard.com/psirt/FG-IR-19-037", "name": "https://www.fortiguard.com/psirt/FG-IR-19-037", "refsource": "CONFIRM"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "eng", "value": "A Default Configuration vulnerability in FortiOS may allow an unauthenticated attacker on the same subnet to intercept sensitive information by impersonating the LDAP server."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Information disclosure"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2019-5591", "STATE": "PUBLIC", "ASSIGNER": "psirt@fortinet.com"}}}}, "cveMetadata": {"cveId": "CVE-2019-5591", "state": "PUBLISHED", "dateUpdated": "2024-10-23T13:30:20.552Z", "dateReserved": "2019-01-07T00:00:00", "assignerOrgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8", "datePublished": "2020-08-14T15:28:25", "assignerShortName": "fortinet"}, "dataVersion": "5.1"}

{"cisaActionDue": "2022-05-03", "cisaExploitAdd": "2021-11-03", "cisaRequiredAction": "Apply updates per vendor instructions.", "cisaVulnerabilityName": "Fortinet FortiOS Default Configuration Vulnerability", "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*", "matchCriteriaId": "1023D06F-42D8-40DA-BEE0-A71397F58202", "versionEndIncluding": "6.2.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A Default Configuration vulnerability in FortiOS may allow an unauthenticated attacker on the same subnet to intercept sensitive information by impersonating the LDAP server."}, {"lang": "es", "value": "Una vulnerabilidad de Configuraci\u00f3n Predeterminada en FortiOS puede permitir a un atacante no autenticado en la misma subred interceptar informaci\u00f3n confidencial al hacerse pasar por el servidor LDAP."}], "id": "CVE-2019-5591", "lastModified": "2025-02-06T16:07:11.657", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "ADJACENT_NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 3.3, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:A/AC:L/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 6.5, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2020-08-14T16:15:16.070", "references": [{"source": "psirt@fortinet.com", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://www.fortiguard.com/psirt/FG-IR-19-037"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://www.fortiguard.com/psirt/FG-IR-19-037"}], "sourceIdentifier": "psirt@fortinet.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-306"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-306"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}