{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-13T12:14:18.177","vulnerabilities":[{"cve":{"id":"CVE-2021-31893","sourceIdentifier":"productcert@siemens.com","published":"2021-07-13T11:15:09.527","lastModified":"2024-11-21T06:06:26.987","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A vulnerability has been identified in SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3), SIMATIC PDM (All versions < V9.2), SIMATIC STEP 7 V5.X (All versions < V5.6 SP2 HF3), SINAMICS STARTER (containing STEP 7 OEM version) (All versions < V5.4 HF2). The affected software contains a buffer overflow vulnerability while handling certain files that could allow a local attacker to trigger a denial-of-service condition or potentially lead to remote code execution."},{"lang":"es","value":"Se ha identificado una vulnerabilidad en SIMATIC PCS 7 versiones V8.2 y anteriores (Todas las versiones), SIMATIC PCS 7  versiones V9.0 (Todas las versiones anteriores a V9.0 SP3), SIMATIC PDM (Todas las versiones anteriores a V9.2), SIMATIC STEP 7  versiones V5.X (Todas las versiones anteriores a V5.6 SP2 HF3), SINAMICS STARTER (que contiene la versión OEM de STEP 7) (Todas las versiones anteriores a V5.4 HF2). El software afectado contiene una vulnerabilidad de desbordamiento de búfer mientras se manejan determinados archivos que podría permitir a un atacante local desencadenar una condición de denegación de servicio o potencialmente conllevar a una ejecución de código remota"}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:L/AC:L/Au:N/C:C/I:C/A:C","baseScore":7.2,"accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"COMPLETE","integrityImpact":"COMPLETE","availabilityImpact":"COMPLETE"},"baseSeverity":"HIGH","exploitabilityScore":3.9,"impactScore":10.0,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"productcert@siemens.com","type":"Secondary","description":[{"lang":"en","value":"CWE-120"}]}],"configurations":[{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:siemens:simatic_pcs_firmware:*:*:*:*:*:*:*:*","versionEndIncluding":"8.2","matchCriteriaId":"7EEA55DF-23A5-4D3D-A2EC-EFFFBD8A7C3F"},{"vulnerable":true,"criteria":"cpe:2.3:o:siemens:simatic_pcs_firmware:9.0:-:*:*:*:*:*:*","matchCriteriaId":"81FDDB73-5C1A-448E-A88E-835F04DB8444"},{"vulnerable":true,"criteria":"cpe:2.3:o:siemens:simatic_pcs_firmware:9.0:sp1:*:*:*:*:*:*","matchCriteriaId":"39CC2ACC-62C3-434D-AB36-B73CA7CD5935"},{"vulnerable":true,"criteria":"cpe:2.3:o:siemens:simatic_pcs_firmware:9.0:sp2:*:*:*:*:*:*","matchCriteriaId":"D6FE8718-AC43-4AD8-9226-2382CB588F7F"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:siemens:simatic_pcs:-:*:*:*:*:*:*:*","matchCriteriaId":"5BEAC421-FE31-4F16-8DB1-B816FDD66D64"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:siemens:simatic_pdm_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"9.2","matchCriteriaId":"FCE0E117-5AB1-4D65-84CA-1F4A48664C93"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:siemens:simatic_pdm:-:*:*:*:*:*:*:*","matchCriteriaId":"E092B735-42D5-48D5-947B-288C0FA2E180"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:siemens:simatic_step_7_firmware:*:*:*:*:*:*:*:*","versionEndIncluding":"5.6","matchCriteriaId":"06CA9ADA-EEEA-4655-93FA-11EF309D869B"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:siemens:simatic_step_7:-:*:*:*:*:*:*:*","matchCriteriaId":"FB1FE00B-0613-4819-8D50-A5A0B6A190D1"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:siemens:sinamics_starter_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"5.4","matchCriteriaId":"ACF25F6B-8DC4-4835-AE2F-2E03D3FA4C8C"},{"vulnerable":true,"criteria":"cpe:2.3:o:siemens:sinamics_starter_firmware:5.4:-:*:*:*:*:*:*","matchCriteriaId":"4D01AB88-A23C-4105-9D5C-DEAA8C2AAFE9"},{"vulnerable":true,"criteria":"cpe:2.3:o:siemens:sinamics_starter_firmware:5.4:hotfix_1:*:*:*:*:*:*","matchCriteriaId":"C803017D-BCE6-4638-A54F-D29CA8AE5ABC"},{"vulnerable":true,"criteria":"cpe:2.3:o:siemens:sinamics_starter_firmware:5.4:hotfix_2:*:*:*:*:*:*","matchCriteriaId":"A5900915-29CC-4F36-9622-4E81038CE932"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:siemens:sinamics_starter:-:*:*:*:*:*:*:*","matchCriteriaId":"C3E8B354-CB0D-40F1-BC2B-C2355974C2A9"}]}]}],"references":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-641963.pdf","source":"productcert@siemens.com","tags":["Patch","Vendor Advisory"]},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-641963.pdf","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Vendor Advisory"]}]}}]}