{"id":"CVE-2021-35394","aliases":["EUVD-2021-22037","GHSA-9q9f-f28q-83xj"],"status":"published","title":"Realtek Jungle SDK version v2.x up to v3.4.14B provides a diagnostic tool called 'MP Daemon' that...","description":"Realtek Jungle SDK version v2.x up to v3.4.14B provides a diagnostic tool called 'MP Daemon' that is usually compiled as 'UDPServer' binary. The binary is affected by multiple memory corruption vulnerabilities and an arbitrary command injection vulnerability that can be exploited by remote unauthenticated attackers.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.99873,"percentile":0.99963,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":false,"fix_available":false},"cwes":["CWE-138","CWE-77","CWE-78"],"published":"2021-08-16T11:07:38Z","modified":"2026-06-17T03:57:29Z","kev":{"date_added":"2021-12-10","due_date":"2021-12-24","required_action":"Apply updates per vendor instructions.","known_ransomware_use":"Unknown"},"exploitation":[{"source":"euvd","since":"2021-12-10"},{"source":"kev","since":"2021-12-10"}],"exploits":[{"source":"nuclei","id":"CVE-2021-35394","title":"RealTek AP Router SDK - Arbitrary Command Injection","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/javascript/cves/2021/CVE-2021-35394.yaml"}],"products":[{"vendor":"realtek","product":"jungle software development kit (sdk)"},{"vendor":"realtek","product":"rtl819x_jungle_software_development_kit"}],"references":[{"url":"https://www.securityfocus.com/archive/1/534765","tags":["x_refsource_MISC","x_transferred","Broken Link","Third Party Advisory","VDB Entry"]},{"url":"https://www.realtek.com/en/cu-1-en/cu-1-taiwan-en","tags":["x_refsource_MISC","x_transferred","Broken Link","Patch","Vendor Advisory"]},{"url":"https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2021-35392_35395.pdf","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain","tags":["x_refsource_MISC","x_transferred","Broken Link","Exploit","Third Party Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-35394","tags":["government-resource","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-35394"},{"url":"https://github.com/advisories/GHSA-9q9f-f28q-83xj"}],"sources":{"cve":[{"id":"CVE-2021-35394","description":"Realtek Jungle SDK version v2.x up to v3.4.14B provides a diagnostic tool called 'MP Daemon' that is usually compiled as 'UDPServer' binary. The binary is affected by multiple memory corruption vulnerabilities and an arbitrary command injection vulnerability that can be exploited by remote unauthenticated attackers.","status":"published","published":"2021-08-16T11:07:38Z","modified":"2025-10-21T23:25:37.658Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:33:09.864034Z"}],"euvd":[{"id":"EUVD-2021-22037","description":"Realtek Jungle SDK version v2.x up to v3.4.14B provides a diagnostic tool called 'MP Daemon' that is usually compiled as 'UDPServer' binary. The binary is affected by multiple memory corruption vulnerabilities and an arbitrary command injection vulnerability that can be exploited by remote unauthenticated attackers.","status":"published","published":"2021-08-16T11:07:38Z","modified":"2025-10-21T23:25:37Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"exploited_since":"2021-12-10","updated_at":"2026-11-02T20:31:25.901288Z"}],"ghsa":[{"id":"GHSA-9q9f-f28q-83xj","title":"Realtek Jungle SDK version v2.x up to v3.4.14B provides a diagnostic tool called 'MP Daemon' that...","description":"Realtek Jungle SDK version v2.x up to v3.4.14B provides a diagnostic tool called 'MP Daemon' that is usually compiled as 'UDPServer' binary. The binary is affected by multiple memory corruption vulnerabilities and an arbitrary command injection vulnerability that can be exploited by remote unauthenticated attackers.","status":"published","published":"2022-05-24T19:11:16Z","modified":"2025-10-22T00:33:23Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-77","CWE-78"],"updated_at":"2026-11-02T15:04:08.198655Z"}],"kev":[{"id":"CVE-2021-35394","title":"Realtek Jungle SDK Remote Code Execution Vulnerability","description":"RealTek Jungle SDK contains multiple memory corruption vulnerabilities which can allow an attacker to perform remote code execution.","cwes":["CWE-78","CWE-138"],"kev":{"date_added":"2021-12-10","due_date":"2021-12-24","required_action":"Apply updates per vendor instructions.","known_ransomware_use":"Unknown"},"updated_at":"2026-11-02T17:00:16.541131Z"}],"nvd":[{"id":"CVE-2021-35394","description":"Realtek Jungle SDK version v2.x up to v3.4.14B provides a diagnostic tool called 'MP Daemon' that is usually compiled as 'UDPServer' binary. The binary is affected by multiple memory corruption vulnerabilities and an arbitrary command injection vulnerability that can be exploited by remote unauthenticated attackers.","status":"published","published":"2021-08-16T12:15:07.267Z","modified":"2026-06-17T03:57:29.187Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:06:56.943671Z"}]}}