{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-21969 exists.","fix":"No fix has been published for CVE-2021-21969 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-21969 is a low-severity memory corruption vulnerability in Sealevel\", published on 4 Feb 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-2021-21969 and fix it if it is affected.\n\nWhat it is: CVE-2021-21969 is a low-severity memory corruption vulnerability in Sealevel\", published on 4 Feb 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-2021-21969 exists.\n\nAffected product: Sealevel\". 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-2021-21969/ (Markdown: https://insights.sbomify.com/CVE-2021-21969/index.md)","id":"CVE-2021-21969","markdown":"https://insights.sbomify.com/CVE-2021-21969/index.md","name":"CVE-2021-21969","record":{"aliases":["GHSA-wjf2-5mh5-257q"],"analysis":{"component_type":"iot_embedded","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Sealevel SeaConnect 370W","requires_auth":"none","summary":"An out-of-bounds write in the SeaConnect 370W MQTT handler allows attackers to cause memory corruption, potentially leading to code execution or denial of service.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"talos","cpe":[{"product":"seaconnect_370w_firmware","vendor":"sealevel"}],"cvss":{"score":3.7,"severity":"low","source":"cna","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.0"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"},{"id":"CWE-120","name":"Buffer Copy without Checking Size of Input"}],"description":"An out-of-bounds write vulnerability exists in the HandleSeaCloudMessage functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. The HandleIncomingSeaCloudMessage function uses at [4] the json_object_get_string to populate the p_payload global variable. The p_payload is only 0x100 bytes long, and the total MQTT message could be up to 0x201 bytes. Because the function json_object_get_string will fill str based on the length of the json’s value and not the actual str size, this would result in a possible out-of-bounds write.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":null,"headline":"Memory corruption in Sealevel\"","id":"CVE-2021-21969","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 Sealevel","id":"CVE-2021-21970"},"packages":[],"prev":{"headline":"Path traversal in Sealevel","id":"CVE-2021-21968"},"products":["Sealevel\""],"published":"2022-02-04","related":[{"cvss_score":10,"headline":"Memory corruption in Sealevel","id":"CVE-2021-21960","kev_date_added":null,"published":"2022-02-04"},{"cvss_score":10,"headline":"Memory corruption in Sealevel","id":"CVE-2021-21961","kev_date_added":null,"published":"2022-02-04"},{"cvss_score":9,"headline":"Memory corruption in Sealevel","id":"CVE-2021-21962","kev_date_added":null,"published":"2022-02-04"},{"cvss_score":8.6,"headline":"Denial of service in Sealevel","id":"CVE-2021-21964","kev_date_added":null,"published":"2022-02-04"},{"cvss_score":8.6,"headline":"Denial of service in Sealevel","id":"CVE-2021-21965","kev_date_added":null,"published":"2022-02-04"},{"cvss_score":8.1,"headline":"Path traversal in Sealevel","id":"CVE-2021-21968","kev_date_added":null,"published":"2022-02-04"},{"cvss_score":7.7,"headline":"Misconfiguration in Sealevel","id":"CVE-2021-21959","kev_date_added":null,"published":"2022-02-04"}],"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":"partial"},"state":"PUBLISHED","updated":"2025-04-15","vendors":["n/a"]},"summary":"An out-of-bounds write in the SeaConnect 370W MQTT handler allows attackers to cause memory corruption, potentially leading to code execution or denial of service.","url":"https://insights.sbomify.com/CVE-2021-21969/"}