{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-40423 exists.","fix":"No fix has been published for CVE-2021-40423 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-40423 is a high-severity denial of service vulnerability in Reolink Rlc-410w Firmware, published on 28 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-2021-40423 and fix it if it is affected.\n\nWhat it is: CVE-2021-40423 is a high-severity denial of service vulnerability in Reolink Rlc-410w Firmware, published on 28 Jan 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-2021-40423 exists.\n\nAffected product: Reolink Rlc-410w Firmware. 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-2021-40423/ (Markdown: https://insights.sbomify.com/CVE-2021-40423/index.md)","id":"CVE-2021-40423","markdown":"https://insights.sbomify.com/CVE-2021-40423/index.md","name":"CVE-2021-40423","record":{"aliases":["GHSA-4grj-8qw5-j9f8"],"analysis":{"component_type":"iot_embedded","fix_type":"no_fix_stated","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Reolink security camera","requires_auth":"none","summary":"An attacker can cause a denial of service on Reolink cameras by sending specially crafted HTTP requests to the API command parser.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"talos","cpe":[{"product":"rlc-410w_firmware","vendor":"reolink"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.0"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"A denial of service vulnerability exists in the cgiserver.cgi API command parser functionality of Reolink RLC-410W v3.0.0.136_20121102. A specially-crafted series of HTTP requests can lead to denial of service. An attacker can send an HTTP request 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":null,"headline":"Denial of service in n/a","id":"CVE-2021-40423","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"reolink:rlc-410w_firmware","products":["reolink:rlc-410w_firmware"],"type":"denial_of_service","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Denial of service in Secure Anywhere","id":"CVE-2021-40424"},"packages":[],"prev":{"headline":"Auth bypass in Swift Sensors Gateway","id":"CVE-2021-40422"},"products":["n/a"],"published":"2022-01-28","related":[{"cvss_score":9.1,"headline":"Reolink RLC-410W IP Camera OS Command Injection Vulnerability","id":"CVE-2021-40407","kev_date_added":"2024-12-18","published":"2022-01-28"},{"cvss_score":10,"headline":"Other in n/a","id":"CVE-2021-40419","kev_date_added":null,"published":"2022-01-28"},{"cvss_score":9.3,"headline":"Memory corruption in n/a","id":"CVE-2022-21796","kev_date_added":null,"published":"2022-01-28"},{"cvss_score":9.1,"headline":"Command injection in n/a","id":"CVE-2021-40408","kev_date_added":null,"published":"2022-01-28"},{"cvss_score":9.1,"headline":"Command injection in n/a","id":"CVE-2021-40409","kev_date_added":null,"published":"2022-01-28"},{"cvss_score":9.1,"headline":"Command injection in n/a","id":"CVE-2021-40410","kev_date_added":null,"published":"2022-01-28"},{"cvss_score":9.1,"headline":"Command injection in n/a","id":"CVE-2021-40411","kev_date_added":null,"published":"2022-01-28"}],"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":"partial"},"state":"PUBLISHED","updated":"2025-04-15","vendors":["n/a"]},"summary":"An attacker can cause a denial of service on Reolink cameras by sending specially crafted HTTP requests to the API command parser.","url":"https://insights.sbomify.com/CVE-2021-40423/"}