{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-40399 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-40399 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-40399 is a high-severity use after free vulnerability in WPS Office, published on 12 May 2022. 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-2021-40399 and fix it if it is affected.\n\nWhat it is: CVE-2021-40399 is a high-severity use after free vulnerability in WPS Office, published on 12 May 2022. 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-2021-40399 in the wild and no public exploit code.\n\nAffected product: WPS Office. 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-2021-40399/ (Markdown: https://insights.sbomify.com/CVE-2021-40399/index.md)","id":"CVE-2021-40399","markdown":"https://insights.sbomify.com/CVE-2021-40399/index.md","name":"CVE-2021-40399","record":{"aliases":["GHSA-gggr-phrh-226m"],"analysis":{"component_type":"desktop_application","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"WPS Office","requires_auth":"none","summary":"A use-after-free vulnerability in WPS Spreadsheets allows remote code execution via a specially crafted XLS file.","user_interaction":"required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"talos","cpe":[{"product":"wps_office","vendor":"wps"}],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.0"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"An exploitable use-after-free vulnerability exists in WPS Spreadsheets ( ET ) as part of WPS Office, version 11.2.0.10351. A specially-crafted XLS file can cause a use-after-free condition, resulting in remote code execution. An attacker needs to provide a malformed file to the victim to trigger the 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":"Use after free in WPS Office","id":"CVE-2021-40399","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"Information disclosure in Gerbv","id":"CVE-2021-40400"},"packages":[],"prev":{"headline":"Memory corruption in ImageGear","id":"CVE-2021-40398"},"products":["WPS Office"],"published":"2022-05-12","related":[{"cvss_score":9.8,"headline":"Privilege escalation in n/a","id":"CVE-2022-24934","kev_date_added":null,"published":"2022-03-23"},{"cvss_score":6.5,"headline":"Denial of service in n/a","id":"CVE-2018-6390","kev_date_added":null,"published":"2018-01-29"}],"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":"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":"2025-04-15","vendors":["WPS"]},"summary":"A use-after-free vulnerability in WPS Spreadsheets allows remote code execution via a specially crafted XLS file.","url":"https://insights.sbomify.com/CVE-2021-40399/"}