{"answers":{"affected":"It affects 8 products.","exploited":"Yes. Attackers have exploited CVE-2019-1253 in the wild since at least 15 Mar 2022, including in ransomware campaigns.","fix":"No fix has been published for CVE-2019-1253 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 5 Apr 2022.","what":"CVE-2019-1253 is a high-severity vulnerability in Microsoft Windows 10 1809, published on 11 Sep 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-2019-1253 and fix it if it is affected.\n\nWhat it is: CVE-2019-1253 is a high-severity vulnerability in Microsoft Windows 10 1809, published on 11 Sep 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-2019-1253 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-2019-1253/ (Markdown: https://insights.sbomify.com/CVE-2019-1253/index.md)","id":"CVE-2019-1253","markdown":"https://insights.sbomify.com/CVE-2019-1253/index.md","name":"CVE-2019-1253","record":{"aliases":["GHSA-wp5j-ppw9-22mw"],"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":"An attacker with local execution can exploit improper junction handling in the Windows AppX Deployment Server to elevate privileges.","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_10_1903","vendor":"microsoft"},{"product":"windows_server_1803","vendor":"microsoft"},{"product":"windows_server_1903","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 the Windows AppX Deployment Server improperly handles junctions.To exploit this vulnerability, an attacker would first have to gain execution on the victim system, aka 'Windows Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-1215, CVE-2019-1278, CVE-2019-1303.","ecosystems":[],"exploits":{"exploitdb":1,"first_seen":"2019-04-10","github_poc":4,"max_poc_stars":152,"metasploit":0,"nuclei":0,"refs":[{"date":"2019-09-11T20:40:15Z","kind":"github_poc","ref":"https://github.com/padovah4ck/CVE-2019-1253","stars":152,"title":"Poc for CVE-2019-1253"},{"date":"2019-04-10T09:44:38Z","kind":"github_poc","ref":"https://github.com/rogue-kdc/CVE-2019-1253","stars":50,"title":null},{"date":"2019-09-11T23:28:59Z","kind":"github_poc","ref":"https://github.com/sgabe/CVE-2019-1253","stars":19,"title":"AppXSvc Arbitrary File Security Descriptor Overwrite EoP"},{"date":"2019-09-11T09:59:22Z","kind":"github_poc","ref":"https://github.com/likekabin/CVE-2019-1253","stars":0,"title":null},{"date":"2019-09-16","kind":"exploitdb","ref":"47389","stars":null,"title":"AppXSvc - Privilege Escalation"}],"tier":"exploited"},"has_fix":null,"headline":"Microsoft Windows AppX Deployment Server Privilege Escalation","id":"CVE-2019-1253","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 Server Privilege Escalation Vulnerability"},"kind":"cve","links":{"ecosystem":null,"product":"microsoft:windows_10_1809","products":["microsoft:windows_10_1809","microsoft:windows_server_2019"],"type":"privilege_escalation","year":"2019"},"n_packages":0,"n_references":2,"next":{"headline":"Information disclosure in Windows","id":"CVE-2019-1254"},"packages":[],"prev":{"headline":"Information disclosure in Windows","id":"CVE-2019-1252"},"products":["Windows","Windows 10 Version 1903 for 32-bit Systems","Windows 10 Version 1903 for ARM64-based Systems","Windows 10 Version 1903 for x64-based Systems","Windows Server","Windows Server, version 1903 (Server Core installation)"],"published":"2019-09-11","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 Service (AppXSVC) Privilege Escalation","id":"CVE-2019-1129","kev_date_added":"2022-03-15","published":"2019-07-29"},{"cvss_score":7.8,"headline":"Microsoft Windows AppX Deployment Service (AppXSVC) Privilege Escalation","id":"CVE-2019-0841","kev_date_added":"2022-03-15","published":"2019-04-09"}],"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":"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":"An attacker with local execution can exploit improper junction handling in the Windows AppX Deployment Server to elevate privileges.","url":"https://insights.sbomify.com/CVE-2019-1253/"}