{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-21100 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-21100 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-21100 is a high-severity vulnerability in Adobe Digital Editions, published on 15 Apr 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-21100 and fix it if it is affected.\n\nWhat it is: CVE-2021-21100 is a high-severity vulnerability in Adobe Digital Editions, published on 15 Apr 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2021-21100 in the wild and no public exploit code.\n\nAffected product: Adobe Digital Editions. 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-2021-21100/ (Markdown: https://insights.sbomify.com/CVE-2021-21100/index.md)","id":"CVE-2021-21100","markdown":"https://insights.sbomify.com/CVE-2021-21100/index.md","name":"CVE-2021-21100","record":{"aliases":["GHSA-j6mg-g6pw-7wx6"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["privilege_escalation","data_modify"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Adobe Digital Editions","requires_auth":"none","summary":"An attacker can achieve arbitrary file system write and privilege escalation by tricking a user into opening a malicious file in Adobe Digital Editions.","user_interaction":"required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"adobe","cpe":[{"product":"digital_editions","vendor":"adobe"}],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-379","name":"Creation of Temporary File in Directory with Insecure Permissions"}],"description":"Adobe Digital Editions version 4.5.11.187245 (and earlier) is affected by a Privilege Escalation vulnerability during installation. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary file system write in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Adobe Digital Editions Arbitrary file system write vulnerability","id":"CVE-2021-21100","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"adobe:digital_editions","products":["adobe:digital_editions"],"type":"privilege_escalation","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Adobe Illustrator TTF font parsing out-of-bounds write vulnerability could lead to remote code execution","id":"CVE-2021-21101"},"packages":[],"prev":{"headline":"Adobe InDesign PCX file parsing out-of-bounds write vulnerability could lead to remote code execution","id":"CVE-2021-21099"},"products":["Digital Editions"],"published":"2021-04-15","related":[{"cvss_score":10,"headline":"Memory corruption in Adobe Digital Editions 4.5.4 and earlier.","id":"CVE-2017-3088","kev_date_added":null,"published":"2017-06-20"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2014-0494","kev_date_added":null,"published":"2014-01-23"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2013-1377","kev_date_added":null,"published":"2013-07-31"},{"cvss_score":9.8,"headline":"Command injection in Adobe Digital Editions","id":"CVE-2020-3760","kev_date_added":null,"published":"2020-02-13"},{"cvss_score":9.8,"headline":"Memory corruption in Adobe Digital Editions","id":"CVE-2019-7095","kev_date_added":null,"published":"2019-05-24"},{"cvss_score":9.8,"headline":"Memory corruption in Adobe Digital Editions","id":"CVE-2018-12813","kev_date_added":null,"published":"2018-10-17"},{"cvss_score":9.8,"headline":"Memory corruption in Adobe Digital Editions","id":"CVE-2018-12814","kev_date_added":null,"published":"2018-10-17"}],"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":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-04-23","vendors":["Adobe"]},"summary":"An attacker can achieve arbitrary file system write and privilege escalation by tricking a user into opening a malicious file in Adobe Digital Editions.","url":"https://insights.sbomify.com/CVE-2021-21100/"}