{"answers":{"affected":"It affects 6 products.","exploited":"Yes. Attackers have exploited CVE-2019-0841 in the wild since at least 15 Mar 2022, including in ransomware campaigns.","fix":"No fix has been published for CVE-2019-0841 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 5 Apr 2022.","what":"CVE-2019-0841 is a high-severity vulnerability in Microsoft Windows 10 1809, published on 9 Apr 2019. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2019-0841 and fix it if it is affected.\n\nWhat it is: CVE-2019-0841 is a high-severity vulnerability in Microsoft Windows 10 1809, published on 9 Apr 2019. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: Yes. Attackers have exploited CVE-2019-0841 in the wild since at least 15 Mar 2022, including in ransomware campaigns.\n\nAffected product: Microsoft Windows 10 1809. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2019-0841/ (Markdown: https://insights.sbomify.com/CVE-2019-0841/index.md)","id":"CVE-2019-0841","markdown":"https://insights.sbomify.com/CVE-2019-0841/index.md","name":"CVE-2019-0841","record":{"aliases":["GHSA-wqq2-j7vf-7rw9"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Windows OS","requires_auth":"low_privilege","summary":"Attackers can exploit improper hard link handling in Windows AppX Deployment Service to elevate privileges on affected systems.","user_interaction":"not_required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"windows_10_1703","vendor":"microsoft"},{"product":"windows_10_1709","vendor":"microsoft"},{"product":"windows_10_1803","vendor":"microsoft"},{"product":"windows_10_1809","vendor":"microsoft"},{"product":"windows_server_2016","vendor":"microsoft"},{"product":"windows_server_2019","vendor":"microsoft"}],"cvss":{"score":7.8,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-59","name":"Improper Link Resolution Before File Access"}],"description":"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.","ecosystems":[],"exploits":{"exploitdb":5,"first_seen":"2019-04-05","github_poc":4,"max_poc_stars":240,"metasploit":1,"nuclei":0,"refs":[{"date":"2019-04-05T12:53:52Z","kind":"github_poc","ref":"https://github.com/rogue-kdc/CVE-2019-0841","stars":240,"title":"PoC code for CVE-2019-0841 Privilege Escalation vulnerability"},{"date":"2019-06-11T20:05:26Z","kind":"github_poc","ref":"https://github.com/0x00-0x00/CVE-2019-0841-BYPASS","stars":58,"title":"A fully automatic CVE-2019-0841 bypass targeting all versions of Edge in Windows 10."},{"date":"2019-04-10T14:58:22Z","kind":"github_poc","ref":"https://github.com/likekabin/CVE-2019-0841","stars":2,"title":null},{"date":"2019-04-09","kind":"exploitdb","ref":"46683","stars":null,"title":"Microsoft Windows - AppX Deployment Service Privilege Escalation"},{"date":"2019-04-09","kind":"metasploit","ref":"exploit/windows/local/appxsvc_hard_link_privesc","stars":null,"title":"AppXSvc Hard Link Privilege Escalation"},{"date":"2019-05-23","kind":"exploitdb","ref":"46938","stars":null,"title":"Microsoft Windows - AppX Deployment Service Local Privilege Escalation (2)"},{"date":"2019-06-07","kind":"exploitdb","ref":"46976","stars":null,"title":"Microsoft Windows - AppX Deployment Service Local Privilege Escalation (3)"},{"date":"2019-07-16","kind":"exploitdb","ref":"47128","stars":null,"title":"Microsoft Windows 10 \u003c build 17763 - AppXSvc Hard Link Privilege Escalation (Metasploit)"}],"tier":"exploited"},"has_fix":null,"headline":"Microsoft Windows AppX Deployment Service (AppXSVC) Privilege Escalation","id":"CVE-2019-0841","indexable":true,"kev":{"dateAdded":"2022-03-15","dueDate":"2022-04-05","knownRansomwareCampaignUse":"Known","product":"Windows","requiredAction":"Apply updates per vendor instructions.","vendorProject":"Microsoft","vulnerabilityName":"Microsoft Windows AppX Deployment Service (AppXSVC) Privilege Escalation Vulnerability"},"kind":"cve","links":{"ecosystem":null,"product":"microsoft:windows_10_1809","products":["microsoft:windows_10_1809","microsoft:windows_server_2016","microsoft:windows_server_2019"],"type":"privilege_escalation","year":"2019"},"n_packages":0,"n_references":8,"next":{"headline":"Memory corruption in Windows","id":"CVE-2019-0842"},"packages":[],"prev":{"headline":"Information disclosure in Windows","id":"CVE-2019-0840"},"products":["Windows","Windows Server"],"published":"2019-04-09","related":[{"cvss_score":8.8,"headline":"Microsoft Windows Shell Remote Code Execution","id":"CVE-2018-8414","kev_date_added":"2022-03-25","published":"2018-08-15"},{"cvss_score":7.8,"headline":"Microsoft Windows AppX Deployment Server Privilege Escalation","id":"CVE-2019-1253","kev_date_added":"2022-03-15","published":"2019-09-11"},{"cvss_score":7.8,"headline":"Microsoft Windows AppX Deployment Service (AppXSVC) Privilege Escalation","id":"CVE-2019-1129","kev_date_added":"2022-03-15","published":"2019-07-29"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"open","licence":"CC0 1.0","name":"CISA KEV"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"attribution","licence":"BSD-3-Clause","name":"Metasploit"},{"class":"attribution","licence":"GPL-2.0-or-later","name":"Exploit-DB"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"active","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-10-21","vendors":["Microsoft"]},"summary":"Attackers can exploit improper hard link handling in Windows AppX Deployment Service to elevate privileges on affected systems.","url":"https://insights.sbomify.com/CVE-2019-0841/"}