CVE-2019-3924 - Vulnerability Details - OpenCVE

MikroTik RouterOS before 6.43.12 (stable) and 6.42.12 (long-term) is vulnerable to an intermediary vulnerability. The software will execute user defined network requests to both WAN and LAN clients. A remote unauthenticated attacker can use this vulnerability to bypass the router's firewall or for general network scanning activities.

No CVSS v4.0

Attack Vector 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 Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact None

Availability Impact None

This CVE is not in the KEV list.

The EPSS score is 0.12217.

Key SSVC decision points have not yet been added.

Vendors	Products
Mikrotik	Routeros

Configuration 1 [-]

OR	cpe:2.3:o:mikrotik:routeros:::::ltr:::*
	cpe:2.3:o:mikrotik:routeros:::::-:::*

No data.

No data.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
http://www.securityfocus.com/bid/107177
https://www.exploit-db.com/exploits/46444/
https://www.tenable.com/security/research/tra-2019-07

History

Fri, 15 Aug 2025 20:30:00 +0000

Type	Values Removed	Values Added
CPEs	cpe:2.3:o:mikrotik:routeros::::::::	cpe:2.3:o:mikrotik:routeros:::::-:::*
Metrics	cvssV3_0 `{'score': 7.5, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}`	cvssV3_1 `{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}`

MITRE

Status: PUBLISHED

Assigner: tenable

Published: 2019-02-20T20:00:00Z

Updated: 2024-09-17T02:46:52.071Z

Reserved: 2019-01-03T00:00:00

Link: CVE-2019-3924

Vulnrichment

No data.

NVD

Status : Analyzed

Published: 2019-02-20T20:29:03.047

Modified: 2025-08-15T20:21:44.360

Link: CVE-2019-3924

Redhat

No data.

OpenCVE Enrichment

No data.

{"containers": {"cna": {"affected": [{"product": "MikroTik RouterOS", "vendor": "Tenable", "versions": [{"status": "affected", "version": "RouterOS long-term 6.42.11 and below, RouterOS stable 6.43.11 and below"}]}], "datePublic": "2019-02-12T00:00:00", "descriptions": [{"lang": "en", "value": "MikroTik RouterOS before 6.43.12 (stable) and 6.42.12 (long-term) is vulnerable to an intermediary vulnerability. The software will execute user defined network requests to both WAN and LAN clients. A remote unauthenticated attacker can use this vulnerability to bypass the router's firewall or for general network scanning activities."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-441", "description": "CWE-441 Unauthenticated Intermediary", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2019-03-05T10:57:02", "orgId": "5ac1ecc2-367a-4d16-a0b2-35d495ddd0be", "shortName": "tenable"}, "references": [{"name": "46444", "tags": ["exploit", "x_refsource_EXPLOIT-DB"], "url": "https://www.exploit-db.com/exploits/46444/"}, {"tags": ["x_refsource_MISC"], "url": "https://www.tenable.com/security/research/tra-2019-07"}, {"name": "107177", "tags": ["vdb-entry", "x_refsource_BID"], "url": "http://www.securityfocus.com/bid/107177"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "vulnreport@tenable.com", "DATE_PUBLIC": "2019-02-12T00:00:00", "ID": "CVE-2019-3924", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "MikroTik RouterOS", "version": {"version_data": [{"version_value": "RouterOS long-term 6.42.11 and below, RouterOS stable 6.43.11 and below"}]}}]}, "vendor_name": "Tenable"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "MikroTik RouterOS before 6.43.12 (stable) and 6.42.12 (long-term) is vulnerable to an intermediary vulnerability. The software will execute user defined network requests to both WAN and LAN clients. A remote unauthenticated attacker can use this vulnerability to bypass the router's firewall or for general network scanning activities."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-441 Unauthenticated Intermediary"}]}]}, "references": {"reference_data": [{"name": "46444", "refsource": "EXPLOIT-DB", "url": "https://www.exploit-db.com/exploits/46444/"}, {"name": "https://www.tenable.com/security/research/tra-2019-07", "refsource": "MISC", "url": "https://www.tenable.com/security/research/tra-2019-07"}, {"name": "107177", "refsource": "BID", "url": "http://www.securityfocus.com/bid/107177"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T19:26:27.480Z"}, "title": "CVE Program Container", "references": [{"name": "46444", "tags": ["exploit", "x_refsource_EXPLOIT-DB", "x_transferred"], "url": "https://www.exploit-db.com/exploits/46444/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.tenable.com/security/research/tra-2019-07"}, {"name": "107177", "tags": ["vdb-entry", "x_refsource_BID", "x_transferred"], "url": "http://www.securityfocus.com/bid/107177"}]}]}, "cveMetadata": {"assignerOrgId": "5ac1ecc2-367a-4d16-a0b2-35d495ddd0be", "assignerShortName": "tenable", "cveId": "CVE-2019-3924", "datePublished": "2019-02-20T20:00:00Z", "dateReserved": "2019-01-03T00:00:00", "dateUpdated": "2024-09-17T02:46:52.071Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:mikrotik:routeros:*:*:*:*:ltr:*:*:*", "matchCriteriaId": "6ABE243E-294B-4E3F-87C1-B259C4F05E24", "versionEndExcluding": "6.42.12", "vulnerable": true}, {"criteria": "cpe:2.3:o:mikrotik:routeros:*:*:*:*:-:*:*:*", "matchCriteriaId": "25FEA7BB-04B7-4B11-9BAB-C94D46A1CCAC", "versionEndExcluding": "6.43.12", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "MikroTik RouterOS before 6.43.12 (stable) and 6.42.12 (long-term) is vulnerable to an intermediary vulnerability. The software will execute user defined network requests to both WAN and LAN clients. A remote unauthenticated attacker can use this vulnerability to bypass the router's firewall or for general network scanning activities."}, {"lang": "es", "value": "MikroTik RouterOS, en versiones anteriores a la 6.43.12 (stable) y 6.42.12 (long-term), es vulnerable a una vulnerabilidad de intermediario. El software ejecutar\u00e1 peticiones de red definidas por el usuario a los clientes WAN y LAN. Un atacante no autenticado remoto puede emplear esta vulnerabilidad para omitir el firewall del router o para realizar actividades generales de escaneo de red."}], "id": "CVE-2019-3924", "lastModified": "2025-08-15T20:21:44.360", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "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"}]}, "published": "2019-02-20T20:29:03.047", "references": [{"source": "vulnreport@tenable.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/107177"}, {"source": "vulnreport@tenable.com", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "url": "https://www.exploit-db.com/exploits/46444/"}, {"source": "vulnreport@tenable.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://www.tenable.com/security/research/tra-2019-07"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/107177"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "url": "https://www.exploit-db.com/exploits/46444/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://www.tenable.com/security/research/tra-2019-07"}], "sourceIdentifier": "vulnreport@tenable.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-441"}], "source": "vulnreport@tenable.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-441"}], "source": "nvd@nist.gov", "type": "Primary"}]}