{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-40426 exists.","fix":"Apply the vendor's patch.","what":"CVE-2021-40426 is a critical memory corruption vulnerability in Sound Exchange libsox, published on 14 Apr 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-2021-40426 and fix it if it is affected.\n\nWhat it is: CVE-2021-40426 is a critical memory corruption vulnerability in Sound Exchange libsox, published on 14 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-40426 exists.\n\nAffected product: Sound Exchange libsox. 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-2021-40426/ (Markdown: https://insights.sbomify.com/CVE-2021-40426/index.md)","id":"CVE-2021-40426","markdown":"https://insights.sbomify.com/CVE-2021-40426/index.md","name":"CVE-2021-40426","record":{"aliases":["DEBIAN-CVE-2021-40426","GHSA-5x4j-m9qh-g9w5","UBUNTU-CVE-2021-40426"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Sound Exchange libsox","requires_auth":"none","summary":"A heap-based buffer overflow in libsox allows attackers to execute arbitrary code or cause denial of service via a specially crafted file.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"talos","cpe":[{"product":"sound_exchange","vendor":"sound_exchange_project"}],"cvss":{"score":10,"severity":"critical","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.0"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"},{"id":"CWE-122","name":"Heap-based Buffer Overflow"}],"description":"A heap-based buffer overflow vulnerability exists in the sphere.c start_read() functionality of Sound Exchange libsox 14.4.2 and master commit 42b3557e. A specially-crafted file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Memory corruption in libsox","id":"CVE-2021-40426","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2021"},"n_packages":0,"n_references":4,"next":{"headline":"Apache HTTP Server-Side Request Forgery (SSRF)","id":"CVE-2021-40438"},"packages":[],"prev":{"headline":"Denial of service in Secure Anywhere","id":"CVE-2021-40425"},"products":["libsox"],"published":"2022-04-14","related":[{"cvss_score":9.1,"headline":"Information disclosure in sox","id":"CVE-2021-3643","kev_date_added":null,"published":"2022-05-02"},{"cvss_score":5.5,"headline":"Memory corruption in SoX (Sound eXchange)","id":"CVE-2021-23159","kev_date_added":null,"published":"2022-08-25"},{"cvss_score":5.5,"headline":"Memory corruption in SoX (Sound eXchange)","id":"CVE-2021-23172","kev_date_added":null,"published":"2022-08-25"},{"cvss_score":5.5,"headline":"Denial of service in SoX (Sound eXchange)","id":"CVE-2021-23210","kev_date_added":null,"published":"2022-08-25"},{"cvss_score":5.5,"headline":"Denial of service in SoX (Sound eXchange)","id":"CVE-2021-33844","kev_date_added":null,"published":"2022-08-25"},{"cvss_score":5.5,"headline":"Denial of service in n/a","id":"CVE-2022-31650","kev_date_added":null,"published":"2022-05-25"}],"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":"yes","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-04-15","vendors":["Sound Exchange"]},"summary":"A heap-based buffer overflow in libsox allows attackers to execute arbitrary code or cause denial of service via a specially crafted file.","url":"https://insights.sbomify.com/CVE-2021-40426/"}