{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-27953 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-27953 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-27953 is a high-severity vulnerability in n/a, published on 3 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-27953 and fix it if it is affected.\n\nWhat it is: CVE-2021-27953 is a high-severity vulnerability in n/a, published on 3 Aug 2021. 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-2021-27953 in the wild and no public exploit code.\n\nAffected product: n/a. 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-2021-27953/ (Markdown: https://insights.sbomify.com/CVE-2021-27953/index.md)","id":"CVE-2021-27953","markdown":"https://insights.sbomify.com/CVE-2021-27953/index.md","name":"CVE-2021-27953","record":{"aliases":["GHSA-xfww-6hgp-m5c5"],"analysis":{"component_type":"iot_embedded","fix_type":"no_fix_stated","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"ecobee3 lite thermostat","requires_auth":"none","summary":"A remote attacker can cause a denial of service on ecobee3 lite devices by sending a crafted HTTP request during HomeKit setup.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"ecobee3_lite_firmware","vendor":"ecobee"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"A NULL pointer dereference vulnerability exists on the ecobee3 lite 4.5.81.200 device in the HomeKit Wireless Access Control setup process. A threat actor can exploit this vulnerability to cause a denial of service, forcing the device to reboot via a crafted HTTP request.","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":"Null dereference in n/a","id":"CVE-2021-27953","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Memory corruption in n/a","id":"CVE-2021-27954"},"packages":[],"prev":{"headline":"Hardcoded credentials in n/a","id":"CVE-2021-27952"},"products":["n/a"],"published":"2021-08-03","related":[{"cvss_score":9.8,"headline":"Hardcoded credentials in n/a","id":"CVE-2021-27952","kev_date_added":null,"published":"2021-08-03"},{"cvss_score":8.2,"headline":"Memory corruption in n/a","id":"CVE-2021-27954","kev_date_added":null,"published":"2021-08-03"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["n/a"]},"summary":"A remote attacker can cause a denial of service on ecobee3 lite devices by sending a crafted HTTP request during HomeKit setup.","url":"https://insights.sbomify.com/CVE-2021-27953/"}