{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-5866 exists.","fix":"No fix has been published for CVE-2025-5866 yet. Limit exposure of the affected software until one is available.","what":"CVE-2025-5866 is a high-severity vulnerability in RT-Thread, published on 9 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-5866 and fix it if it is affected.\n\nWhat it is: CVE-2025-5866 is a high-severity vulnerability in RT-Thread, published on 9 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-5866 exists.\n\nAffected product: RT-Thread. 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-2025-5866/ (Markdown: https://insights.sbomify.com/CVE-2025-5866/index.md)","id":"CVE-2025-5866","markdown":"https://insights.sbomify.com/CVE-2025-5866/index.md","name":"CVE-2025-5866","record":{"aliases":["GHSA-xxqp-4rfr-9px7"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"RT-Thread RTOS","requires_auth":"low_privilege","summary":"Improper validation of array index in sys_sigprocmask allows attackers to cause memory corruption or denial of service in RT-Thread.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[{"product":"rt-thread","vendor":"rt-thread"}],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X","version":"4.0"},"cwes":[{"id":"CWE-129","name":"Improper Validation of Array Index"},{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"}],"description":"A vulnerability classified as critical has been found in RT-Thread 5.1.0. This affects the function sys_sigprocmask of the file rt-thread/components/lwp/lwp_syscall.c. The manipulation of the argument how leads to improper validation of array index.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"RT-Thread lwp_syscall.c sys_sigprocmask array index","id":"CVE-2025-5866","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2025"},"n_packages":0,"n_references":4,"next":{"headline":"RT-Thread lwp_syscall.c csys_sendto null pointer dereference","id":"CVE-2025-5867"},"packages":[],"prev":{"headline":"RT-Thread Parameter lwp_syscall.c sys_select memory corruption","id":"CVE-2025-5865"},"products":["RT-Thread"],"published":"2025-06-09","related":[{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2024-25393","kev_date_added":null,"published":"2024-03-27"},{"cvss_score":8.8,"headline":"Memory corruption in n/a","id":"CVE-2024-25395","kev_date_added":null,"published":"2024-03-27"},{"cvss_score":8.6,"headline":"RT-Thread Parameter lwp_syscall.c sys_select memory corruption","id":"CVE-2025-5865","kev_date_added":null,"published":"2025-06-09"},{"cvss_score":8.6,"headline":"RT-Thread lwp_syscall.c csys_sendto null pointer dereference","id":"CVE-2025-5867","kev_date_added":null,"published":"2025-06-09"},{"cvss_score":8.6,"headline":"RT-Thread lwp_syscall.c sys_thread_sigprocmask array index","id":"CVE-2025-5868","kev_date_added":null,"published":"2025-06-09"},{"cvss_score":8.6,"headline":"RT-Thread lwp_syscall.c sys_recvfrom memory corruption","id":"CVE-2025-5869","kev_date_added":null,"published":"2025-06-09"}],"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":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-06-09","vendors":["n/a"]},"summary":"Improper validation of array index in sys_sigprocmask allows attackers to cause memory corruption or denial of service in RT-Thread.","url":"https://insights.sbomify.com/CVE-2025-5866/"}