{"answers":{"affected":"It affects 16 products.","exploited":"Yes. Attackers have exploited CVE-2020-1020 in the wild since at least 3 Nov 2021.","fix":"No fix has been published for CVE-2020-1020 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 3 May 2022.","what":"CVE-2020-1020 is a high-severity memory corruption vulnerability in Microsoft Windows 10 1507, published on 15 Apr 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2020-1020 and fix it if it is affected.\n\nWhat it is: CVE-2020-1020 is a high-severity memory corruption vulnerability in Microsoft Windows 10 1507, published on 15 Apr 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: Yes. Attackers have exploited CVE-2020-1020 in the wild since at least 3 Nov 2021.\n\nAffected product: Microsoft Windows 10 1507. 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-2020-1020/ (Markdown: https://insights.sbomify.com/CVE-2020-1020/index.md)","id":"CVE-2020-1020","markdown":"https://insights.sbomify.com/CVE-2020-1020/index.md","name":"CVE-2020-1020","record":{"aliases":["GHSA-jvx5-6596-c2vj"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Windows OS","requires_auth":"none","summary":"Remote attackers can execute arbitrary code by exploiting a memory corruption flaw in the Windows Adobe Type Manager Library via crafted fonts.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"windows_10_1507","vendor":"microsoft"},{"product":"windows_10_1607","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_10_1909","vendor":"microsoft"},{"product":"windows_7","vendor":"microsoft"},{"product":"windows_8.1","vendor":"microsoft"},{"product":"windows_rt_8.1","vendor":"microsoft"},{"product":"windows_server_1903","vendor":"microsoft"},{"product":"windows_server_1909","vendor":"microsoft"},{"product":"windows_server_2008","vendor":"microsoft"},{"product":"windows_server_2012","vendor":"microsoft"},{"product":"windows_server_2016","vendor":"microsoft"},{"product":"windows_server_2019","vendor":"microsoft"}],"cvss":{"score":8.8,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"A remote code execution vulnerability exists in Microsoft Windows when the Windows Adobe Type Manager Library improperly handles a specially-crafted multi-master font - Adobe Type 1 PostScript format.For all systems except Windows 10, an attacker who successfully exploited the vulnerability could execute code remotely, aka 'Adobe Font Manager Library Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2020-0938.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2021-06-10","github_poc":2,"max_poc_stars":10,"metasploit":0,"nuclei":0,"refs":[{"date":"2021-08-10T03:10:39Z","kind":"github_poc","ref":"https://github.com/KaLendsi/CVE-2020-1020","stars":10,"title":"Windows Font Driver Type 1 VToHOrigin stack corruption"},{"date":"2021-06-10T06:23:59Z","kind":"github_poc","ref":"https://github.com/CrackerCat/CVE-2020-1020-Exploit","stars":2,"title":null}],"tier":"exploited"},"has_fix":null,"headline":"Microsoft Windows Adobe Font Manager Library Remote Code Execution","id":"CVE-2020-1020","indexable":true,"kev":{"dateAdded":"2021-11-03","dueDate":"2022-05-03","knownRansomwareCampaignUse":"Unknown","product":"Windows","requiredAction":"Apply updates per vendor instructions.","vendorProject":"Microsoft","vulnerabilityName":"Microsoft Windows Adobe Font Manager Library Remote Code Execution Vulnerability"},"kind":"cve","links":{"ecosystem":null,"product":"microsoft:windows_10_1507","products":["microsoft:windows_10_1507","microsoft:windows_10_1607","microsoft:windows_10_1809","microsoft:windows_7","microsoft:windows_8.1","microsoft:windows_rt_8.1","microsoft:windows_server_2008","microsoft:windows_server_2012","microsoft:windows_server_2016","microsoft:windows_server_2019"],"type":"memory_corruption","year":"2020"},"n_packages":0,"n_references":1,"next":{"headline":"Windows Error Reporting Elevation of Privilege Vulnerability","id":"CVE-2020-1021"},"packages":[],"prev":{"headline":"Privilege escalation in Microsoft RMS Sharing for Mac","id":"CVE-2020-1019"},"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 10 Version 1909 for 32-bit Systems","Windows 10 Version 1909 for ARM64-based Systems","Windows 10 Version 1909 for x64-based Systems","Windows Server","Windows Server, version 1903 (Server Core installation)","Windows Server, version 1909 (Server Core installation)"],"published":"2020-04-15","related":[{"cvss_score":9.8,"headline":"Microsoft Windows Search Remote Code Execution","id":"CVE-2017-8543","kev_date_added":"2022-05-24","published":"2017-06-15"},{"cvss_score":8.8,"headline":"Microsoft Windows External Control of File Name or Path","id":"CVE-2025-33053","kev_date_added":"2025-06-10","published":"2025-06-10"},{"cvss_score":8.8,"headline":"Microsoft Windows SMB Client Improper Access Control","id":"CVE-2025-33073","kev_date_added":"2025-10-20","published":"2025-06-10"},{"cvss_score":8.8,"headline":"Microsoft Windows Task Scheduler Privilege Escalation","id":"CVE-2024-49039","kev_date_added":"2024-11-12","published":"2024-11-12"},{"cvss_score":8.8,"headline":"Microsoft Windows MSHTML Platform Spoofing","id":"CVE-2024-43461","kev_date_added":"2024-09-16","published":"2024-09-10"},{"cvss_score":8.8,"headline":"Microsoft Windows MSHTML Platform Security Feature Bypass","id":"CVE-2024-30040","kev_date_added":"2024-05-14","published":"2024-05-14"},{"cvss_score":8.8,"headline":"Microsoft Windows SmartScreen Security Feature Bypass","id":"CVE-2023-36025","kev_date_added":"2023-11-14","published":"2023-11-14"}],"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":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"active","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-10-21","vendors":["Microsoft"]},"summary":"Remote attackers can execute arbitrary code by exploiting a memory corruption flaw in the Windows Adobe Type Manager Library via crafted fonts.","url":"https://insights.sbomify.com/CVE-2020-1020/"}