{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:uip_project:uip:*:*:*:*:*:*:*:*", "matchCriteriaId": "98518C5F-7D0A-4B03-A062-651E613A01BE", "versionEndIncluding": "1.0", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:contiki-os:contiki:*:*:*:*:*:*:*:*", "matchCriteriaId": "EBD2BE71-F851-4136-816D-EF61154FD2C4", "versionEndIncluding": "3.0", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:open-iscsi_project:open-iscsi:*:*:*:*:*:*:*:*", "matchCriteriaId": "82EAB4C1-AAC8-431E-AED1-1845AC303201", "versionEndIncluding": "2.1.12", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:siemens:sentron_3va_com100_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "507AAF60-4AFE-4D80-A698-13BD5818CAE7", "versionEndExcluding": "4.4.1", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:siemens:sentron_3va_com100:-:*:*:*:*:*:*:*", "matchCriteriaId": "6C308EF6-7893-44EF-978E-9019B0060911", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:siemens:sentron_3va_com800_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "08B3AAE7-AAC6-4ECC-9338-AC8841336C59", "versionEndExcluding": "4.4.1", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:siemens:sentron_3va_com800:-:*:*:*:*:*:*:*", "matchCriteriaId": "7CECE258-D12A-4483-AF4B-A63FAD08A767", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:siemens:sentron_pac3200_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "92EDAF30-8EC2-4C76-BD27-6C6084B9CA03", "versionEndExcluding": "2.4.7", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:siemens:sentron_pac3200:-:*:*:*:*:*:*:*", "matchCriteriaId": "624451C4-149D-4FEE-B2FB-020574F03231", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:siemens:sentron_pac4200_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "E46CC95C-7941-4B23-A0E9-79AB18A6E9C2", "versionEndExcluding": "2.3.0", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:siemens:sentron_pac4200:-:*:*:*:*:*:*:*", "matchCriteriaId": "B48B5DE2-25BF-44A1-BB12-A734DD4A9560", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue was discovered in Contiki through 3.0. An Out-of-Bounds Read vulnerability exists in the uIP TCP/IP Stack component when calculating the checksums for IP packets in upper_layer_chksum in net/ipv4/uip.c."}, {"lang": "es", "value": "Se detect\u00f3 un problema en Contiki versiones hasta 3.0. Se presenta una vulnerabilidad de Lectura Fuera de L\u00edmites en el componente uIP TCP/IP Stack cuando se calculan las sumas de comprobaci\u00f3n para paquetes IP en la funci\u00f3n upper_layer_chksum en el archivo net/ipv4/uip.c"}], "id": "CVE-2020-13987", "lastModified": "2026-06-17T02:54:03.397", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "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": "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": "2020-12-11T22:15:12.543", "references": [{"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-541018.pdf"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory", "US Government Resource"], "url": "https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory", "US Government Resource"], "url": "https://www.kb.cert.org/vuls/id/815128"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-541018.pdf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "US Government Resource"], "url": "https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "US Government Resource"], "url": "https://www.kb.cert.org/vuls/id/815128"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "nvd@nist.gov", "type": "Primary"}]}