{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-43905 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-43905 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-43905 is a critical code injection vulnerability in Microsoft 365 Copilot, published on 15 Dec 2021. 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-2021-43905 and fix it if it is affected.\n\nWhat it is: CVE-2021-43905 is a critical code injection vulnerability in Microsoft 365 Copilot, published on 15 Dec 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2021-43905 in the wild and no public exploit code.\n\nAffected product: Microsoft 365 Copilot. 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-2021-43905/ (Markdown: https://insights.sbomify.com/CVE-2021-43905/index.md)","id":"CVE-2021-43905","markdown":"https://insights.sbomify.com/CVE-2021-43905/index.md","name":"CVE-2021-43905","record":{"aliases":["GHSA-p5c8-x5qh-v2mv"],"analysis":{"component_type":"desktop_application","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Microsoft Office app","requires_auth":"none","summary":"Attackers can execute arbitrary code on systems running the Microsoft Office app, requiring immediate patching by users and administrators.","user_interaction":"required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"365_copilot","vendor":"microsoft"}],"cvss":{"score":9.6,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C","version":"3.1"},"cwes":[],"description":"Microsoft Office app Remote Code Execution Vulnerability","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":"Microsoft Office app Remote Code Execution Vulnerability","id":"CVE-2021-43905","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"microsoft:365_copilot","products":["microsoft:365_copilot"],"type":"code_injection","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Visual Studio Code WSL Extension Remote Code Execution Vulnerability","id":"CVE-2021-43907"},"packages":[],"prev":{"headline":"Microsoft 4K Wireless Display Adapter Remote Code Execution Vulnerability","id":"CVE-2021-43899"},"products":["Office app"],"published":"2021-12-15","related":[{"cvss_score":9.9,"headline":"Microsoft 365 Copilot Elevation of Privilege Vulnerability","id":"CVE-2026-85885","kev_date_added":null,"published":"2026-09-17"},{"cvss_score":9.9,"headline":"Microsoft M365 Copilot Remote Code Execution Vulnerability","id":"CVE-2026-50517","kev_date_added":null,"published":"2026-07-24"},{"cvss_score":9.8,"headline":"M365 Copilot Information Disclosure Vulnerability","id":"CVE-2026-54130","kev_date_added":null,"published":"2026-06-18"},{"cvss_score":9.8,"headline":"GDI+ Remote Code Execution Vulnerability","id":"CVE-2025-60724","kev_date_added":null,"published":"2025-11-11"},{"cvss_score":9.8,"headline":"GDI+ Remote Code Execution Vulnerability","id":"CVE-2025-53766","kev_date_added":null,"published":"2025-08-12"},{"cvss_score":9.6,"headline":"Microsoft Edge Copilot Remote Code Execution Vulnerability","id":"CVE-2026-48561","kev_date_added":null,"published":"2026-07-14"}],"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":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-05-28","vendors":["Microsoft"]},"summary":"Attackers can execute arbitrary code on systems running the Microsoft Office app, requiring immediate patching by users and administrators.","url":"https://insights.sbomify.com/CVE-2021-43905/"}