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Advisory"]},{"url":"https://www.tenable.com/security/research/tra-2021-47","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-34583"},{"url":"https://github.com/advisories/GHSA-rx79-rgx5-5gqx"}],"sources":{"cve":[{"id":"CVE-2021-34583","title":"CODESYS V2 web server: crafted requests could trigger a heap-based buffer overflow (DoS)","description":"Crafted web server requests may cause a heap-based buffer overflow and could therefore trigger a denial-of- service condition due to a crash in the CODESYS V2 web server prior to V1.1.9.22.","status":"published","published":"2021-10-26T09:55:45.129Z","modified":"2024-09-16T20:43:32.357Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T14:33:11.59359Z"}],"euvd":[{"id":"EUVD-2021-21233","description":"Crafted web server requests may cause a 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