{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-04T12:14:21.926","vulnerabilities":[{"cve":{"id":"CVE-2021-34857","sourceIdentifier":"zdi-disclosures@trendmicro.com","published":"2021-10-25T17:15:08.293","lastModified":"2024-11-21T06:11:21.080","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 16.1.3 (49160). An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the Toolgate component. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-13601."},{"lang":"es","value":"Esta vulnerabilidad permite a atacantes locales escalar privilegios en las instalaciones afectadas de Parallels Desktop versión 16.1.3 (49160). Un atacante debe obtener primero la habilidad de ejecutar código con privilegios elevados en el sistema huésped de destino para poder explotar esta vulnerabilidad. El fallo específico se presenta en el componente Toolgate. El problema resulta de una falta de comprobación apropiada de los datos suministrados por el usuario, que puede resultar en una escritura más allá del final de un búfer asignado. Un atacante puede aprovechar esta vulnerabilidad para escalar privilegios y ejecutar código arbitrario en el contexto del hypervisor. Fue ZDI-CAN-13601"}],"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:C/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.0,"impactScore":6.0}],"cvssMetricV30":[{"source":"zdi-disclosures@trendmicro.com","type":"Secondary","cvssData":{"version":"3.0","vectorString":"CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","baseScore":8.2,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.5,"impactScore":6.0}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:L/AC:L/Au:N/C:P/I:P/A:P","baseScore":4.6,"accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":3.9,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"zdi-disclosures@trendmicro.com","type":"Secondary","description":[{"lang":"en","value":"CWE-787"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:parallels:parallels_desktop:16.1.3:*:*:*:*:macos:*:*","matchCriteriaId":"97B97F09-5AE7-47BD-82DF-47422EC15D8B"}]}]}],"references":[{"url":"https://kb.parallels.com/125013","source":"zdi-disclosures@trendmicro.com","tags":["Patch","Vendor Advisory"]},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-940/","source":"zdi-disclosures@trendmicro.com","tags":["Third Party Advisory","VDB Entry"]},{"url":"https://kb.parallels.com/125013","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Vendor Advisory"]},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-940/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory","VDB Entry"]}]}}]}