{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/162231?format=json","vulnerability_id":"VCID-p95b-b9hw-ekfu","summary":"An elevation of privilege vulnerability exists when Windows AppX Deployment Service (AppXSVC) improperly handles hard links, aka 'Windows Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-0730, CVE-2019-0731, CVE-2019-0796, CVE-2019-0805, CVE-2019-0836.","aliases":[{"alias":"CVE-2019-0841"}],"fixed_packages":[],"affected_packages":[],"references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2019-0841","reference_id":"","reference_type":"","scores":[{"value":"0.8265","scoring_system":"epss","scoring_elements":"0.9926","published_at":"2026-06-11T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2019-0841"},{"reference_url":"https://www.exploit-db.com/exploits/46683/","reference_id":"46683","reference_type":"","scores":[{"value":"7.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"value":"Attend","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:A/A:N/T:T/P:M/B:A/M:M/D:A/2025-02-07T16:18:10Z/"}],"url":"https://www.exploit-db.com/exploits/46683/"},{"reference_url":"http://packetstormsecurity.com/files/153642/AppXSvc-Hard-Link-Privilege-Escalation.html","reference_id":"AppXSvc-Hard-Link-Privilege-Escalation.html","reference_type":"","scores":[{"value":"7.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"value":"Attend","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:A/A:N/T:T/P:M/B:A/M:M/D:A/2025-02-07T16:18:10Z/"}],"url":"http://packetstormsecurity.com/files/153642/AppXSvc-Hard-Link-Privilege-Escalation.html"},{"reference_url":"https://github.com/SandboxEscaper/polarbearrepo/tree/5fd3a1e3652bba36ee95186945c5cc1c5f006143/CVE-2019-0841-BYPASS","reference_id":"CVE-2019-0841","reference_type":"exploit","scores":[],"url":"https://github.com/SandboxEscaper/polarbearrepo/tree/5fd3a1e3652bba36ee95186945c5cc1c5f006143/CVE-2019-0841-BYPASS"},{"reference_url":"https://github.com/SandboxEscaper/polarbearrepo/tree/fd73afeafbe363ed28e0521f46894574a58b3d72/ByeBear","reference_id":"CVE-2019-0841","reference_type":"exploit","scores":[],"url":"https://github.com/SandboxEscaper/polarbearrepo/tree/fd73afeafbe363ed28e0521f46894574a58b3d72/ByeBear"},{"reference_url":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/local/46683.txt","reference_id":"CVE-2019-0841","reference_type":"exploit","scores":[],"url":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/local/46683.txt"},{"reference_url":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/local/46938.txt","reference_id":"CVE-2019-0841","reference_type":"exploit","scores":[],"url":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/local/46938.txt"},{"reference_url":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/local/46976.txt","reference_id":"CVE-2019-0841","reference_type":"exploit","scores":[],"url":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/local/46976.txt"},{"reference_url":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/local/47128.rb","reference_id":"CVE-2019-0841","reference_type":"exploit","scores":[],"url":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/local/47128.rb"},{"reference_url":"https://krbtgt.pw/dacl-permissions-overwrite-privilege-escalation-cve-2019-0841/","reference_id":"CVE-2019-0841","reference_type":"exploit","scores":[],"url":"https://krbtgt.pw/dacl-permissions-overwrite-privilege-escalation-cve-2019-0841/"},{"reference_url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0841","reference_id":"CVE-2019-0841","reference_type":"","scores":[{"value":"7.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"value":"Attend","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:A/A:N/T:T/P:M/B:A/M:M/D:A/2025-02-07T16:18:10Z/"}],"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0841"},{"reference_url":"https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/local/appxsvc_hard_link_privesc.rb","reference_id":"CVE-2019-0841","reference_type":"exploit","scores":[],"url":"https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/local/appxsvc_hard_link_privesc.rb"},{"reference_url":"http://packetstormsecurity.com/files/153009/Internet-Explorer-JavaScript-Privilege-Escalation.html","reference_id":"Internet-Explorer-JavaScript-Privilege-Escalation.html","reference_type":"","scores":[{"value":"7.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"value":"Attend","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:A/A:N/T:T/P:M/B:A/M:M/D:A/2025-02-07T16:18:10Z/"}],"url":"http://packetstormsecurity.com/files/153009/Internet-Explorer-JavaScript-Privilege-Escalation.html"},{"reference_url":"http://packetstormsecurity.com/files/153114/Microsoft-Windows-AppX-Deployment-Service-Local-Privilege-Escalation.html","reference_id":"Microsoft-Windows-AppX-Deployment-Service-Local-Privilege-Escalation.html","reference_type":"","scores":[{"value":"7.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"value":"Attend","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:A/A:N/T:T/P:M/B:A/M:M/D:A/2025-02-07T16:18:10Z/"}],"url":"http://packetstormsecurity.com/files/153114/Microsoft-Windows-AppX-Deployment-Service-Local-Privilege-Escalation.html"},{"reference_url":"http://packetstormsecurity.com/files/153215/Microsoft-Windows-AppX-Deployment-Service-Local-Privilege-Escalation.html","reference_id":"Microsoft-Windows-AppX-Deployment-Service-Local-Privilege-Escalation.html","reference_type":"","scores":[{"value":"7.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"value":"Attend","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:A/A:N/T:T/P:M/B:A/M:M/D:A/2025-02-07T16:18:10Z/"}],"url":"http://packetstormsecurity.com/files/153215/Microsoft-Windows-AppX-Deployment-Service-Local-Privilege-Escalation.html"},{"reference_url":"http://packetstormsecurity.com/files/152463/Microsoft-Windows-AppX-Deployment-Service-Privilege-Escalation.html","reference_id":"Microsoft-Windows-AppX-Deployment-Service-Privilege-Escalation.html","reference_type":"","scores":[{"value":"7.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"value":"Attend","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:A/A:N/T:T/P:M/B:A/M:M/D:A/2025-02-07T16:18:10Z/"}],"url":"http://packetstormsecurity.com/files/152463/Microsoft-Windows-AppX-Deployment-Service-Privilege-Escalation.html"},{"reference_url":"https://www.zerodayinitiative.com/advisories/ZDI-19-360/","reference_id":"ZDI-19-360","reference_type":"","scores":[{"value":"7.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"value":"Attend","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:A/A:N/T:T/P:M/B:A/M:M/D:A/2025-02-07T16:18:10Z/"}],"url":"https://www.zerodayinitiative.com/advisories/ZDI-19-360/"}],"weaknesses":[],"exploits":[{"date_added":"2022-03-15","description":"A privilege escalation vulnerability exists when Windows AppXSVC improperly handles hard links. An attacker who successfully exploited this vulnerability could run processes in an elevated context.","required_action":"Apply updates per vendor instructions.","due_date":"2022-04-05","notes":"https://nvd.nist.gov/vuln/detail/CVE-2019-0841","known_ransomware_campaign_use":true,"source_date_published":null,"exploit_type":null,"platform":null,"source_date_updated":null,"data_source":"KEV","source_url":null},{"date_added":null,"description":"There exists a privilege escalation vulnerability for\n          Windows 10 builds prior to build 17763. Due to the AppXSvc's\n          improper handling of hard links, a user can gain full\n          privileges over a SYSTEM-owned file. The user can then utilize\n          the new file to execute code as SYSTEM.\n\n          This module employs a technique using the Diagnostics Hub Standard\n          Collector Service (DiagHub) which was discovered by James Forshaw to\n          load and execute a DLL as SYSTEM.","required_action":null,"due_date":null,"notes":"Reliability:\n  - unknown-reliability\nStability:\n  - unknown-stability\nSideEffects:\n  - unknown-side-effects\n","known_ransomware_campaign_use":false,"source_date_published":"2019-04-09","exploit_type":null,"platform":"Windows","source_date_updated":null,"data_source":"Metasploit","source_url":"https://github.com/rapid7/metasploit-framework/tree/master/modules/exploits/windows/local/appxsvc_hard_link_privesc.rb"},{"date_added":"2019-07-16","description":"Microsoft Windows 10 < build 17763 - AppXSvc Hard Link Privilege Escalation (Metasploit)","required_action":null,"due_date":null,"notes":null,"known_ransomware_campaign_use":true,"source_date_published":"2019-07-16","exploit_type":"local","platform":"windows","source_date_updated":"2019-07-16","data_source":"Exploit-DB","source_url":"https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/local/appxsvc_hard_link_privesc.rb"}],"severity_range_score":"7.8 - 7.8","exploitability":null,"weighted_severity":null,"risk_score":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-p95b-b9hw-ekfu"}