CVE-2020-27827 (GCVE-0-2020-27827)
Vulnerability from cvelistv5 – Published: 2021-03-18 00:00 – Updated: 2025-12-03 18:20
VLAI
EPSS
VEX
Summary
A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service. The highest threat from this vulnerability is to system availability.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-06-04 13:38 UTC
CWE
Assigner
References
8 references
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| n/a | lldp/openvswitch |
Affected:
lldpd 1.0.8, openvswitch 2.14.1, openvswitch 2.13.2, openvswitch 2.12.2, openvswitch 2.11.5, openvswitch 2.10.6, openvswitch 2.9.8, openvswitch 2.8.10, openvswitch 2.7.12, openvswitch 2.6.9
|
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-04T16:25:43.547Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1921438"
},
{
"tags": [
"x_transferred"
],
"url": "https://mail.openvswitch.org/pipermail/ovs-dev/2021-January/379471.html"
},
{
"tags": [
"x_transferred"
],
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-941426.pdf"
},
{
"tags": [
"x_transferred"
],
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-194-07"
},
{
"name": "FEDORA-2023-88991d2713",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/"
},
{
"name": "FEDORA-2023-c0c184a019",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/"
},
{
"name": "FEDORA-2023-3e4feeadec",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/"
},
{
"name": "GLSA-202311-16",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://security.gentoo.org/glsa/202311-16"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2020-27827",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-06-04T13:38:48.935265Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-12-03T18:20:03.875Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "lldp/openvswitch",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "lldpd 1.0.8, openvswitch 2.14.1, openvswitch 2.13.2, openvswitch 2.12.2, openvswitch 2.11.5, openvswitch 2.10.6, openvswitch 2.9.8, openvswitch 2.8.10, openvswitch 2.7.12, openvswitch 2.6.9"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service. The highest threat from this vulnerability is to system availability."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-400",
"description": "CWE-400",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2023-11-26T11:06:15.202Z",
"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"shortName": "redhat"
},
"references": [
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1921438"
},
{
"url": "https://mail.openvswitch.org/pipermail/ovs-dev/2021-January/379471.html"
},
{
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-941426.pdf"
},
{
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-194-07"
},
{
"name": "FEDORA-2023-88991d2713",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/"
},
{
"name": "FEDORA-2023-c0c184a019",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/"
},
{
"name": "FEDORA-2023-3e4feeadec",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/"
},
{
"name": "GLSA-202311-16",
"tags": [
"vendor-advisory"
],
"url": "https://security.gentoo.org/glsa/202311-16"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"assignerShortName": "redhat",
"cveId": "CVE-2020-27827",
"datePublished": "2021-03-18T00:00:00.000Z",
"dateReserved": "2020-10-27T00:00:00.000Z",
"dateUpdated": "2025-12-03T18:20:03.875Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2020-27827",
"date": "2026-09-19",
"epss": "0.03235",
"percentile": "0.87709"
},
"fkie_nvd": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:lldpd_project:lldpd:*:*:*:*:*:*:*:*",
"matchCriteriaId": "60E35B97-6AAD-4F2D-88E7-D1B235D36E63",
"versionEndExcluding": "1.0.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*",
"matchCriteriaId": "D7946D64-A914-4DC4-8AFA-E5A4C9415B87",
"versionEndExcluding": "2.6.9",
"versionStartIncluding": "2.6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*",
"matchCriteriaId": "FCBC3BDE-1CFE-4275-8F33-BC7D0ECD88BA",
"versionEndExcluding": "2.7.12",
"versionStartIncluding": "2.7.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*",
"matchCriteriaId": "F553884B-6DC9-4DBD-ADD6-B24B8A9FDFBA",
"versionEndExcluding": "2.8.10",
"versionStartIncluding": "2.8.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*",
"matchCriteriaId": "4A42E11A-8575-40B1-8343-840783E17FD0",
"versionEndExcluding": "2.9.8",
"versionStartIncluding": "2.9.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*",
"matchCriteriaId": "92DE8269-BD35-46B7-B4D0-5C0B5C3B2BE5",
"versionEndExcluding": "2.10.6",
"versionStartIncluding": "2.10.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*",
"matchCriteriaId": "6AA97E08-3F7E-46CE-B03D-FD06307137A8",
"versionEndExcluding": "2.11.5",
"versionStartIncluding": "2.11.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*",
"matchCriteriaId": "F74931FC-4B61-4EAD-90CD-D095A9BC76B6",
"versionEndExcluding": "2.12.2",
"versionStartIncluding": "2.12.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*",
"matchCriteriaId": "6AACFC3E-4242-4E9E-9AC2-B2E1C700DF0C",
"versionEndExcluding": "2.13.2",
"versionStartIncluding": "2.13.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*",
"matchCriteriaId": "E22360F8-FD09-4CED-8E62-46916AB17A12",
"versionEndExcluding": "2.14.1",
"versionStartIncluding": "2.14.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*",
"matchCriteriaId": "932D137F-528B-4526-9A89-CD59FA1AB0FE",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:*",
"matchCriteriaId": "E722FEF7-58A6-47AD-B1D0-DB0B71B0C7AA",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:*",
"matchCriteriaId": "704CFA1A-953E-4105-BFBE-406034B83DED",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:*",
"matchCriteriaId": "6BBD7A51-0590-4DDF-8249-5AFA8D645CB6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*",
"matchCriteriaId": "142AD0DD-4CF3-4D74-9442-459CE3347E3A",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*",
"matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
"matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_hmi_unified_comfort_panels_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "CAB60054-8FD0-45A4-B7DC-FFF061764B80",
"versionEndExcluding": "17",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_hmi_unified_comfort_panels:-:*:*:*:*:*:*:*",
"matchCriteriaId": "2921C017-7617-4789-9690-C81EAC4F469D",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_net_cp_1243-1_firmware:-:*:*:*:*:*:*:*",
"matchCriteriaId": "238D992C-6158-4E31-AE0A-7A9C54B51963",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_net_cp_1243-1:-:*:*:*:*:*:*:*",
"matchCriteriaId": "65278BA0-3C81-4D81-9801-D7BE3A1D7680",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_net_cp_1243-8_irc_firmware:-:*:*:*:*:*:*:*",
"matchCriteriaId": "2009C1FA-96D5-413C-9161-0DB55F841088",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_net_cp_1243-8_irc:-:*:*:*:*:*:*:*",
"matchCriteriaId": "350FD323-C876-4C7A-A2E7-4B0660C87F6C",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_net_cp_1542sp-1_firmware:-:*:*:*:*:*:*:*",
"matchCriteriaId": "F56E0C04-AEC3-45C8-93E7-FCA3B7F370F6",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_net_cp_1542sp-1:-:*:*:*:*:*:*:*",
"matchCriteriaId": "0602DEEA-AE39-4A44-9D78-6623943DDCD6",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_net_cp_1542sp-1_irc_firmware:-:*:*:*:*:*:*:*",
"matchCriteriaId": "1F7747CD-757E-4B36-8F23-7588183948A7",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_net_cp_1542sp-1_irc:-:*:*:*:*:*:*:*",
"matchCriteriaId": "C1EE2F10-A7A6-486F-AE5C-53AE25BAF200",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_net_cp_1543-1_firmware:-:*:*:*:*:*:*:*",
"matchCriteriaId": "BB5A494F-2EAB-4647-9A45-5CB0C382E099",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_net_cp_1543-1:-:*:*:*:*:*:*:*",
"matchCriteriaId": "F56C2BDC-928E-491A-8E7C-F976B3787C7A",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_net_cp_1543sp-1_firmware:-:*:*:*:*:*:*:*",
"matchCriteriaId": "98C894B9-C62A-4689-9DA4-D9A3795B8CE5",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_net_cp_1543sp-1:-:*:*:*:*:*:*:*",
"matchCriteriaId": "783B50B8-2FB7-4982-88AA-B4F2AD094796",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_net_cp_1545-1_firmware:-:*:*:*:*:*:*:*",
"matchCriteriaId": "7A46FF27-6B0D-4606-9D7B-45912556416F",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_net_cp_1545-1:-:*:*:*:*:*:*:*",
"matchCriteriaId": "1256EB4B-DD8A-4F99-AE69-F74E8F789C63",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:tim_1531_irc_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "D5B1898E-CB50-429B-9609-DC27C33C5C37",
"versionEndExcluding": "2.2",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:tim_1531_irc:-:*:*:*:*:*:*:*",
"matchCriteriaId": "C1D94BEB-BBFB-4258-9835-87DBBB999239",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:sinumerik_one_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "296D097F-C7D2-4D12-8621-E0D1CAE64FA1",
"versionEndExcluding": "2.0.1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:sinumerik_one:-:*:*:*:*:*:*:*",
"matchCriteriaId": "AE30FFDF-5494-400D-8F88-954A6B1503B9",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service. The highest threat from this vulnerability is to system availability."
},
{
"lang": "es",
"value": "Se encontr\u00f3 un fallo en m\u00faltiples versiones de OpenvSwitch.\u0026#xa0;Los paquetes LLDP especialmente dise\u00f1ados pueden causar que una memoria se pierda cuando se asignan datos para manejar TLV opcionales espec\u00edficos, potencialmente causando una denegaci\u00f3n de servicio.\u0026#xa0;La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema"
}
],
"id": "CVE-2020-27827",
"lastModified": "2024-11-21T05:21:53.260",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 7.1,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 6.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2021-03-18T17:15:13.510",
"references": [
{
"source": "secalert@redhat.com",
"tags": [
"Issue Tracking",
"Mitigation",
"Patch",
"Third Party Advisory"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1921438"
},
{
"source": "secalert@redhat.com",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-941426.pdf"
},
{
"source": "secalert@redhat.com",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/"
},
{
"source": "secalert@redhat.com",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/"
},
{
"source": "secalert@redhat.com",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/"
},
{
"source": "secalert@redhat.com",
"tags": [
"Mailing List",
"Mitigation",
"Vendor Advisory"
],
"url": "https://mail.openvswitch.org/pipermail/ovs-dev/2021-January/379471.html"
},
{
"source": "secalert@redhat.com",
"url": "https://security.gentoo.org/glsa/202311-16"
},
{
"source": "secalert@redhat.com",
"tags": [
"Third Party Advisory",
"US Government Resource"
],
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-194-07"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Issue Tracking",
"Mitigation",
"Patch",
"Third Party Advisory"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1921438"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-941426.pdf"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Mitigation",
"Vendor Advisory"
],
"url": "https://mail.openvswitch.org/pipermail/ovs-dev/2021-January/379471.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://security.gentoo.org/glsa/202311-16"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory",
"US Government Resource"
],
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-194-07"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-400"
}
],
"source": "secalert@redhat.com",
"type": "Primary"
}
]
},
"microsoft_vex": {
"current_release_date": "2022-08-06T00:00:00.000Z",
"cve": "CVE-2020-27827",
"id": "msrc_CVE-2020-27827",
"initial_release_date": "2021-03-02T00:00:00.000Z",
"product_status:fixed": "3",
"product_status:known_affected": "3",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs potentially causing a denial of service. The highest threat from this vulnerability is to system availability.",
"url": "https://msrc.microsoft.com/csaf/vex/2021/msrc_cve-2020-27827.json",
"version": "2"
},
"nvd": {
"cve": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:lldpd_project:lldpd:*:*:*:*:*:*:*:*",
"matchCriteriaId": "60E35B97-6AAD-4F2D-88E7-D1B235D36E63",
"versionEndExcluding": "1.0.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*",
"matchCriteriaId": "D7946D64-A914-4DC4-8AFA-E5A4C9415B87",
"versionEndExcluding": "2.6.9",
"versionStartIncluding": "2.6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*",
"matchCriteriaId": "FCBC3BDE-1CFE-4275-8F33-BC7D0ECD88BA",
"versionEndExcluding": "2.7.12",
"versionStartIncluding": "2.7.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*",
"matchCriteriaId": "F553884B-6DC9-4DBD-ADD6-B24B8A9FDFBA",
"versionEndExcluding": "2.8.10",
"versionStartIncluding": "2.8.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*",
"matchCriteriaId": "4A42E11A-8575-40B1-8343-840783E17FD0",
"versionEndExcluding": "2.9.8",
"versionStartIncluding": "2.9.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*",
"matchCriteriaId": "92DE8269-BD35-46B7-B4D0-5C0B5C3B2BE5",
"versionEndExcluding": "2.10.6",
"versionStartIncluding": "2.10.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*",
"matchCriteriaId": "6AA97E08-3F7E-46CE-B03D-FD06307137A8",
"versionEndExcluding": "2.11.5",
"versionStartIncluding": "2.11.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*",
"matchCriteriaId": "F74931FC-4B61-4EAD-90CD-D095A9BC76B6",
"versionEndExcluding": "2.12.2",
"versionStartIncluding": "2.12.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*",
"matchCriteriaId": "6AACFC3E-4242-4E9E-9AC2-B2E1C700DF0C",
"versionEndExcluding": "2.13.2",
"versionStartIncluding": "2.13.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*",
"matchCriteriaId": "E22360F8-FD09-4CED-8E62-46916AB17A12",
"versionEndExcluding": "2.14.1",
"versionStartIncluding": "2.14.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*",
"matchCriteriaId": "932D137F-528B-4526-9A89-CD59FA1AB0FE",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:*",
"matchCriteriaId": "E722FEF7-58A6-47AD-B1D0-DB0B71B0C7AA",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:*",
"matchCriteriaId": "704CFA1A-953E-4105-BFBE-406034B83DED",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:*",
"matchCriteriaId": "6BBD7A51-0590-4DDF-8249-5AFA8D645CB6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*",
"matchCriteriaId": "142AD0DD-4CF3-4D74-9442-459CE3347E3A",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*",
"matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
"matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_hmi_unified_comfort_panels_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "CAB60054-8FD0-45A4-B7DC-FFF061764B80",
"versionEndExcluding": "17",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_hmi_unified_comfort_panels:-:*:*:*:*:*:*:*",
"matchCriteriaId": "2921C017-7617-4789-9690-C81EAC4F469D",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_net_cp_1243-1_firmware:-:*:*:*:*:*:*:*",
"matchCriteriaId": "238D992C-6158-4E31-AE0A-7A9C54B51963",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_net_cp_1243-1:-:*:*:*:*:*:*:*",
"matchCriteriaId": "65278BA0-3C81-4D81-9801-D7BE3A1D7680",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_net_cp_1243-8_irc_firmware:-:*:*:*:*:*:*:*",
"matchCriteriaId": "2009C1FA-96D5-413C-9161-0DB55F841088",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_net_cp_1243-8_irc:-:*:*:*:*:*:*:*",
"matchCriteriaId": "350FD323-C876-4C7A-A2E7-4B0660C87F6C",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_net_cp_1542sp-1_firmware:-:*:*:*:*:*:*:*",
"matchCriteriaId": "F56E0C04-AEC3-45C8-93E7-FCA3B7F370F6",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_net_cp_1542sp-1:-:*:*:*:*:*:*:*",
"matchCriteriaId": "0602DEEA-AE39-4A44-9D78-6623943DDCD6",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_net_cp_1542sp-1_irc_firmware:-:*:*:*:*:*:*:*",
"matchCriteriaId": "1F7747CD-757E-4B36-8F23-7588183948A7",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_net_cp_1542sp-1_irc:-:*:*:*:*:*:*:*",
"matchCriteriaId": "C1EE2F10-A7A6-486F-AE5C-53AE25BAF200",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_net_cp_1543-1_firmware:-:*:*:*:*:*:*:*",
"matchCriteriaId": "BB5A494F-2EAB-4647-9A45-5CB0C382E099",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_net_cp_1543-1:-:*:*:*:*:*:*:*",
"matchCriteriaId": "F56C2BDC-928E-491A-8E7C-F976B3787C7A",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_net_cp_1543sp-1_firmware:-:*:*:*:*:*:*:*",
"matchCriteriaId": "98C894B9-C62A-4689-9DA4-D9A3795B8CE5",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_net_cp_1543sp-1:-:*:*:*:*:*:*:*",
"matchCriteriaId": "783B50B8-2FB7-4982-88AA-B4F2AD094796",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simatic_net_cp_1545-1_firmware:-:*:*:*:*:*:*:*",
"matchCriteriaId": "7A46FF27-6B0D-4606-9D7B-45912556416F",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simatic_net_cp_1545-1:-:*:*:*:*:*:*:*",
"matchCriteriaId": "1256EB4B-DD8A-4F99-AE69-F74E8F789C63",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:tim_1531_irc_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "D5B1898E-CB50-429B-9609-DC27C33C5C37",
"versionEndExcluding": "2.2",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:tim_1531_irc:-:*:*:*:*:*:*:*",
"matchCriteriaId": "C1D94BEB-BBFB-4258-9835-87DBBB999239",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:sinumerik_one_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "296D097F-C7D2-4D12-8621-E0D1CAE64FA1",
"versionEndExcluding": "2.0.1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:sinumerik_one:-:*:*:*:*:*:*:*",
"matchCriteriaId": "AE30FFDF-5494-400D-8F88-954A6B1503B9",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service. The highest threat from this vulnerability is to system availability."
},
{
"lang": "es",
"value": "Se encontr\u00f3 un fallo en m\u00faltiples versiones de OpenvSwitch.\u0026#xa0;Los paquetes LLDP especialmente dise\u00f1ados pueden causar que una memoria se pierda cuando se asignan datos para manejar TLV opcionales espec\u00edficos, potencialmente causando una denegaci\u00f3n de servicio.\u0026#xa0;La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema"
}
],
"id": "CVE-2020-27827",
"lastModified": "2025-12-03T19:15:51.763",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 7.1,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 6.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
},
"published": "2021-03-18T17:15:13.510",
"references": [
{
"source": "secalert@redhat.com",
"tags": [
"Issue Tracking",
"Mitigation",
"Patch",
"Third Party Advisory"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1921438"
},
{
"source": "secalert@redhat.com",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-941426.pdf"
},
{
"source": "secalert@redhat.com",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/"
},
{
"source": "secalert@redhat.com",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/"
},
{
"source": "secalert@redhat.com",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/"
},
{
"source": "secalert@redhat.com",
"tags": [
"Mailing List",
"Mitigation",
"Vendor Advisory"
],
"url": "https://mail.openvswitch.org/pipermail/ovs-dev/2021-January/379471.html"
},
{
"source": "secalert@redhat.com",
"url": "https://security.gentoo.org/glsa/202311-16"
},
{
"source": "secalert@redhat.com",
"tags": [
"Third Party Advisory",
"US Government Resource"
],
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-194-07"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Issue Tracking",
"Mitigation",
"Patch",
"Third Party Advisory"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1921438"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-941426.pdf"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Mitigation",
"Vendor Advisory"
],
"url": "https://mail.openvswitch.org/pipermail/ovs-dev/2021-January/379471.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://security.gentoo.org/glsa/202311-16"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory",
"US Government Resource"
],
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-194-07"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-400"
}
],
"source": "secalert@redhat.com",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-06-28T07:37:04+00:00",
"cve": "CVE-2020-27827",
"id": "CVE-2020-27827",
"initial_release_date": "2020-01-01T00:00:00+00:00",
"product_status:fixed": "154",
"product_status:known_affected": "46",
"product_status:known_not_affected": "6",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "lldp/openvswitch: denial of service via externally triggered memory leak",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-27827.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2026-08-21T01:47:09Z",
"cve": "CVE-2020-27827",
"id": "CVE-2020-27827",
"initial_release_date": "2023-02-15T03:52:17Z",
"product_status:recommended": "706",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2020-27827",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2020-27827.json",
"version": "29"
},
"vulnrichment": {
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-04T16:25:43.547Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1921438"
},
{
"tags": [
"x_transferred"
],
"url": "https://mail.openvswitch.org/pipermail/ovs-dev/2021-January/379471.html"
},
{
"tags": [
"x_transferred"
],
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-941426.pdf"
},
{
"tags": [
"x_transferred"
],
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-194-07"
},
{
"name": "FEDORA-2023-88991d2713",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/"
},
{
"name": "FEDORA-2023-c0c184a019",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/"
},
{
"name": "FEDORA-2023-3e4feeadec",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/"
},
{
"name": "GLSA-202311-16",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://security.gentoo.org/glsa/202311-16"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2020-27827",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-06-04T13:38:48.935265Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-06-04T13:38:59.599Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "lldp/openvswitch",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "lldpd 1.0.8, openvswitch 2.14.1, openvswitch 2.13.2, openvswitch 2.12.2, openvswitch 2.11.5, openvswitch 2.10.6, openvswitch 2.9.8, openvswitch 2.8.10, openvswitch 2.7.12, openvswitch 2.6.9"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service. The highest threat from this vulnerability is to system availability."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-400",
"description": "CWE-400",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2023-11-26T11:06:15.202Z",
"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"shortName": "redhat"
},
"references": [
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1921438"
},
{
"url": "https://mail.openvswitch.org/pipermail/ovs-dev/2021-January/379471.html"
},
{
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-941426.pdf"
},
{
"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-194-07"
},
{
"name": "FEDORA-2023-88991d2713",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/"
},
{
"name": "FEDORA-2023-c0c184a019",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/"
},
{
"name": "FEDORA-2023-3e4feeadec",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/"
},
{
"name": "GLSA-202311-16",
"tags": [
"vendor-advisory"
],
"url": "https://security.gentoo.org/glsa/202311-16"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"assignerShortName": "redhat",
"cveId": "CVE-2020-27827",
"datePublished": "2021-03-18T00:00:00.000Z",
"dateReserved": "2020-10-27T00:00:00.000Z",
"dateUpdated": "2025-12-03T18:20:03.875Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…