{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-24042 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-24042 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-24042 is a critical memory corruption vulnerability in Facebook WhatsApp Business for Android, published on 4 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-24042 and fix it if it is affected.\n\nWhat it is: CVE-2021-24042 is a critical memory corruption vulnerability in Facebook WhatsApp Business for Android, published on 4 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-24042 in the wild and no public exploit code.\n\nAffected product: Facebook WhatsApp Business for Android. 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-2021-24042/ (Markdown: https://insights.sbomify.com/CVE-2021-24042/index.md)","id":"CVE-2021-24042","markdown":"https://insights.sbomify.com/CVE-2021-24042/index.md","name":"CVE-2021-24042","record":{"aliases":["GHSA-mp5j-h5hx-cfxc"],"analysis":{"component_type":"mobile_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"WhatsApp messaging app","requires_auth":"none","summary":"An out-of-bounds write vulnerability in WhatsApp allows attackers to execute arbitrary code when a user initiates a call to a malicious actor.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"facebook","cpe":[{"product":"whatsapp","vendor":"whatsapp"}],"cvss":{"score":9.8,"severity":"critical","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"},{"id":"CWE-122","name":"Heap-based Buffer Overflow"}],"description":"The calling logic for WhatsApp for Android prior to v2.21.23, WhatsApp Business for Android prior to v2.21.23, WhatsApp for iOS prior to v2.21.230, WhatsApp Business for iOS prior to v2.21.230, WhatsApp for KaiOS prior to v2.2143, WhatsApp Desktop prior to v2.2146 could have allowed an out-of-bounds write if a user makes a 1:1 call to a malicious actor.","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":"Memory corruption in WhatsApp Business for Android","id":"CVE-2021-24042","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Memory corruption in n/a","id":"CVE-2021-24043"},"packages":[],"prev":{"headline":"Memory corruption in WhatsApp Business for Android","id":"CVE-2021-24041"},"products":["WhatsApp Business for Android","WhatsApp Business for iOS","WhatsApp Desktop","WhatsApp for Android","WhatsApp for KaiOS","WhatsApp for iOS"],"published":"2022-01-04","related":[{"cvss_score":9.8,"headline":"WhatsApp VOIP Stack Buffer Overflow","id":"CVE-2019-3568","kev_date_added":"2022-04-19","published":"2019-05-14"},{"cvss_score":8.2,"headline":"WhatsApp Cross-Site Scripting","id":"CVE-2019-18426","kev_date_added":"2022-05-23","published":"2020-01-21"},{"cvss_score":5.4,"headline":"Meta Platforms WhatsApp Incorrect Authorization","id":"CVE-2025-55177","kev_date_added":"2025-09-02","published":"2025-08-29"},{"cvss_score":9.8,"headline":"Integer overflow in WhatsApp Business for Android","id":"CVE-2022-36934","kev_date_added":null,"published":"2022-09-22"},{"cvss_score":9.8,"headline":"Memory corruption in WhatsApp Business for Android","id":"CVE-2021-24041","kev_date_added":null,"published":"2021-12-07"},{"cvss_score":9.8,"headline":"Memory corruption in WhatsApp Business for Android","id":"CVE-2021-24026","kev_date_added":null,"published":"2021-04-06"}],"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":"partial"},"state":"PUBLISHED","updated":"2025-05-22","vendors":["Facebook"]},"summary":"An out-of-bounds write vulnerability in WhatsApp allows attackers to execute arbitrary code when a user initiates a call to a malicious actor.","url":"https://insights.sbomify.com/CVE-2021-24042/"}