{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-3774 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-3774 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-3774 is a high-severity vulnerability in Meross Smart Wi-Fi 2 Way Wall Switch, published on 5 Nov 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-3774 and fix it if it is affected.\n\nWhat it is: CVE-2021-3774 is a high-severity vulnerability in Meross Smart Wi-Fi 2 Way Wall Switch, published on 5 Nov 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2021-3774 in the wild and no public exploit code.\n\nAffected product: Meross Smart Wi-Fi 2 Way Wall Switch. 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-2021-3774/ (Markdown: https://insights.sbomify.com/CVE-2021-3774/index.md)","id":"CVE-2021-3774","markdown":"https://insights.sbomify.com/CVE-2021-3774/index.md","name":"CVE-2021-3774","record":{"aliases":["GHSA-p792-3c6f-m4p5"],"analysis":{"component_type":"iot_embedded","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Smart Wi-Fi Wall Switch","requires_auth":"none","summary":"An attacker can intercept plain HTTP requests during initial setup to steal Wi-Fi credentials from the Meross Smart Wi-Fi Wall Switch.","user_interaction":"required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"INCIBE","cpe":[{"product":"mss550x_firmware","vendor":"meross"}],"cvss":{"score":7.4,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-319","name":"Cleartext Transmission of Sensitive Information"}],"description":"Meross Smart Wi-Fi 2 Way Wall Switch (MSS550X), on its 3.1.3 version and before, creates an open Wi-Fi Access Point without the required security measures in its initial setup. This could allow a remote attacker to obtain the Wi-Fi SSID as well as the password configured by the user from Meross app via Http/JSON plain 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":"Meross MSS550X Missing Encryption of Sensitive Data","id":"CVE-2021-3774","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Cross-Site Request Forgery (CSRF) in star7th/showdoc","id":"CVE-2021-3775"},"packages":[],"prev":{"headline":"Information disclosure in kernel","id":"CVE-2021-3773"},"products":["Meross Smart Wi-Fi 2 Way Wall Switch"],"published":"2021-11-05","related":[],"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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-04-23","vendors":["Meross"]},"summary":"An attacker can intercept plain HTTP requests during initial setup to steal Wi-Fi credentials from the Meross Smart Wi-Fi Wall Switch.","url":"https://insights.sbomify.com/CVE-2021-3774/"}