CVE-2026-5107

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-5107", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-03-29T17:55:46.788Z", "datePublished": "2026-03-30T05:00:19.025Z", "dateUpdated": "2026-03-30T16:02:10.336Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-03-30T05:00:19.025Z"}, "title": "FRRouting FRR EVPN Type-2 Route bgp_evpn.c process_type2_route access control", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-284", "lang": "en", "description": "Improper Access Controls"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-266", "lang": "en", "description": "Incorrect Privilege Assignment"}]}], "affected": [{"vendor": "FRRouting", "product": "FRR", "versions": [{"version": "10.5.0", "status": "affected"}, {"version": "10.5.1", "status": "affected"}], "modules": ["EVPN Type-2 Route Handler"]}], "descriptions": [{"lang": "en", "value": "A vulnerability has been found in FRRouting FRR up to 10.5.1. This affects the function process_type2_route of the file bgpd/bgp_evpn.c of the component EVPN Type-2 Route Handler. The manipulation leads to improper access controls. The attack can be initiated remotely. The attack is considered to have high complexity. The exploitability is reported as difficult. The identifier of the patch is 7676cad65114aa23adde583d91d9d29e2debd045. To fix this issue, it is recommended to deploy a patch."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 2.3, "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X", "baseSeverity": "LOW"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 4.2, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C", "baseSeverity": "MEDIUM"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 4.2, "vectorString": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C", "baseSeverity": "MEDIUM"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 3.6, "vectorString": "AV:N/AC:H/Au:S/C:N/I:P/A:P/E:ND/RL:OF/RC:C"}}], "timeline": [{"time": "2026-03-29T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-03-29T01:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-03-29T20:00:50.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "rensiru (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/vuln/354132", "name": "VDB-354132 | FRRouting FRR EVPN Type-2 Route bgp_evpn.c process_type2_route access control", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/354132/cti", "name": "VDB-354132 | CTI Indicators (IOB, IOC, TTP, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/submit/780123", "name": "Submit #780123 | FRRouting FRR 10.5.1 Improper Input Validation", "tags": ["third-party-advisory"]}, {"url": "https://github.com/FRRouting/frr/pull/21098", "tags": ["issue-tracking", "patch"]}, {"url": "https://github.com/FRRouting/frr/commit/7676cad65114aa23adde583d91d9d29e2debd045", "tags": ["patch"]}, {"url": "https://github.com/FRRouting/frr/", "tags": ["product"]}], "tags": ["x_open-source"]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-03-30T16:01:58.307304Z", "id": "CVE-2026-5107", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-30T16:02:10.336Z"}}]}}

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{"affected": [{"affectedData": [{"modules": ["EVPN Type-2 Route Handler"], "product": "FRR", "vendor": "FRRouting", "versions": [{"status": "affected", "version": "10.5.0"}, {"status": "affected", "version": "10.5.1"}]}], "source": "cna@vuldb.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:frrouting:frrouting:10.5.0:*:*:*:*:*:*:*", "matchCriteriaId": "602011E7-4715-4162-A3BE-7E487CBB632B", "vulnerable": true}, {"criteria": "cpe:2.3:a:frrouting:frrouting:10.5.1:*:*:*:*:*:*:*", "matchCriteriaId": "A6E88B9B-6953-410D-B6FB-275BD59D3715", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability has been found in FRRouting FRR up to 10.5.1. This affects the function process_type2_route of the file bgpd/bgp_evpn.c of the component EVPN Type-2 Route Handler. The manipulation leads to improper access controls. The attack can be initiated remotely. The attack is considered to have high complexity. The exploitability is reported as difficult. The identifier of the patch is 7676cad65114aa23adde583d91d9d29e2debd045. To fix this issue, it is recommended to deploy a patch."}, {"lang": "es", "value": "Se ha encontrado una vulnerabilidad en FRRouting FRR hasta la versi\u00f3n 10.5.1. Esto afecta a la funci\u00f3n process_type2_route del archivo bgpd/bgp_evpn.c del componente Gestor de Rutas EVPN Tipo-2. La manipulaci\u00f3n conduce a controles de acceso inadecuados. El ataque puede iniciarse de forma remota. El ataque se considera de alta complejidad. La explotabilidad se reporta como dif\u00edcil. El identificador del parche es 7676cad65114aa23adde583d91d9d29e2debd045. Para solucionar este problema, se recomienda aplicar un parche."}], "id": "CVE-2026-5107", "lastModified": "2026-06-17T10:58:26.947", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "HIGH", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 3.6, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:H/Au:S/C:N/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 2.5, "source": "cna@vuldb.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 2.5, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 2.3, "baseSeverity": "LOW", "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": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/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": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-5107", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-30T16:01:58.307304Z", "version": "2.0.3"}}]}, "published": "2026-03-30T06:16:05.510", "references": [{"source": "cna@vuldb.com", "tags": ["Product"], "url": "https://github.com/FRRouting/frr/"}, {"source": "cna@vuldb.com", "tags": ["Patch"], "url": "https://github.com/FRRouting/frr/commit/7676cad65114aa23adde583d91d9d29e2debd045"}, {"source": "cna@vuldb.com", "tags": ["Issue Tracking", "Patch"], "url": "https://github.com/FRRouting/frr/pull/21098"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/submit/780123"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/vuln/354132"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required", "VDB Entry"], "url": "https://vuldb.com/vuln/354132/cti"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-266"}, {"lang": "en", "value": "CWE-284"}], "source": "cna@vuldb.com", "type": "Secondary"}]}

{"bugzilla": {"description": "FRRouting FRR: frr: FRRouting FRR: Improper access controls in EVPN Type-2 Route Handler", "id": "2452939", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2452939"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.2", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L", "status": "draft"}, "cwe": "CWE-807", "details": ["A flaw was found in frr package. This vulnerability, located in the EVPN Type-2 Route Handler function, allowing a remote attacker to manipulate access controls when successfully exploited. Due to the high complexity of the attack, exploitation is considered difficult. This could potentially lead to unauthorized actions within the system."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-5107", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "frr", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "frr", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "frr", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "frr10", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-03-30T05:00:19Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-5107\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-5107\nhttps://github.com/FRRouting/frr/\nhttps://github.com/FRRouting/frr/commit/7676cad65114aa23adde583d91d9d29e2debd045\nhttps://github.com/FRRouting/frr/pull/21098\nhttps://vuldb.com/submit/780123\nhttps://vuldb.com/vuln/354132\nhttps://vuldb.com/vuln/354132/cti"], "statement": "A Moderate impact flaw was found in the FRRouting (FRR) package, specifically within the EVPN Type-2 Route Handler. This vulnerability could allow a remote attacker to manipulate access controls. Exploitation is considered difficult due to the high complexity of the attack. This affects Red Hat Enterprise Linux 8, 9, and 10.", "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "10.5.0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "10.5.1"}}], "enrichment": {"confidence": 81.0, "confidence_source": "matching", "scores": [{"score": 81.0, "source": "matching"}]}, "original": {"product": "FRR", "source": "cna", "vendor": "FRRouting"}, "product": "frrouting", "vendor": "frrouting"}], "analysis": {"en": {"generated_at": "2026-03-31T06:03:14.535727+00:00", "value": {"mitigation_remediation": ["Apply the FRRouting patch identified by commit hash 7676cad65114aa23adde583d91d9d29e2debd045 or upgrade to a version newer than 10.5.1.", "Verify that the installed FRR version includes the corrected process_type2_route implementation.", "If an immediate update is not possible, isolate the FRR instance from untrusted networks, restrict remote BGP connections, and enforce strict firewall rules to limit access to the EVPN route handling service.", "Monitor FRR logs for anomalous EVPN route advertisements that could indicate exploitation attempts."], "summary": {"action": "Patch Immediately", "impact": "Unauthorized access to EVPN routing information"}, "threat_synthesis": {"affected_systems": "The affected product is FRRouting FRR, specifically versions up to 10.5.1. No other vendors or products are listed, and the flaw is limited to the EVPN Type-2 Route handling component.", "description_and_impact": "A flaw in the EVPN Type-2 Route Handler of FRRouting FRR, affecting releases up to 10.5.1, allows remote actors to manipulate the process_type2_route function in bgpd/bgp_evpn.c. The manipulation bypasses established access controls, enabling unauthorized changes to EVPN routing tables. While exploitation requires a high level of complexity and is reported as difficult, the vector is remote, suggesting that an attacker could potentially introduce incorrect routes or disrupt network traffic if successful.", "risk_and_exploitability": "The CVSS score of 2.3 indicates low severity, and the EPSS score of less than 1 percent signals a very small probability of exploitation. The vulnerability is not listed in the CISA KEV catalog. Although the attack is considered difficult and requires high complexity, the remote attack vector implies that a threat actor with sufficient skill could exploit the flaw. Based on the description, it is inferred that successful exploitation could allow an attacker to manipulate EVPN Type-2 routes, potentially altering routing decisions on the target. Because the exploit relies on a specific remote function in bgp_evpn.c, automated attacks would be challenging, but targeted attackers may still find value in compromising the host."}}}}, "created": "2026-03-30T06:57:51.277200+00:00", "updated": "2026-03-31T20:00:17.550974+00:00", "vendors": ["frrouting", "frrouting$PRODUCT$frrouting"]}