{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-27T12:54:09.246","vulnerabilities":[{"cve":{"id":"CVE-2020-25856","sourceIdentifier":"vuln@vdoo.com","published":"2021-02-03T17:15:15.420","lastModified":"2026-06-17T03:07:23.917","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"The function DecWPA2KeyData() in the Realtek RTL8195A Wi-Fi Module prior to versions released in April 2020 (up to and excluding 2.08) does not validate the size parameter for an rtl_memcpy() operation, resulting in a stack buffer overflow which can be exploited for remote code execution or denial of service. An attacker can impersonate an Access Point and attack a vulnerable Wi-Fi client, by injecting a crafted packet into the WPA2 handshake. The attacker needs to know the network's PSK in order to exploit this."},{"lang":"es","value":"La función DecWPA2KeyData() en el módulo Wi-Fi Realtek RTL8195A anterior a versiones publicadas en Abril de 2020 (hasta y excluyendo la 2.08), no comprueba el parámetro size para una operación rtl_memcpy(), resulta en un desbordamiento del búfer de la pila que puede ser explotada para una ejecución de código remota o una denegación de servicio. Un atacante puede hacerse pasar por un Access Point y atacar a un cliente Wi-Fi vulnerable al inyectar un paquete diseñado en el protocolo de enlace WPA2. El atacante necesita conocer el PSK de la red para explotar esto"}],"affected":[{"source":"vuln@vdoo.com","affectedData":[{"vendor":"n/a","product":"Realtek RTL8195A Wi-Fi Module","versions":[{"version":"Versions before 2020-04-21 (up to and excluding 2.08)","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.2,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:P/I:P/A:P","baseScore":6.8,"accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":8.6,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"vuln@vdoo.com","type":"Secondary","description":[{"lang":"en","value":"CWE-121"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-787"}]}],"configurations":[{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:realtek:rtl8195a_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"2.08","matchCriteriaId":"24D4DC02-E833-483C-885F-9E168E5F8A4C"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:realtek:rtl8195a:-:*:*:*:*:*:*:*","matchCriteriaId":"62A37D39-5134-4AFE-9F59-C8C36A113B04"}]}]}],"references":[{"url":"https://www.vdoo.com/blog/realtek-rtl8195a-vulnerabilities-discovered/","source":"vuln@vdoo.com","tags":["Exploit","Third Party Advisory"]},{"url":"https://www.vdoo.com/blog/realtek-rtl8195a-vulnerabilities-discovered/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Third Party Advisory"]}]}}]}