{"id":"CVE-2022-31804","aliases":["EUVD-2022-53193","GHSA-qhgm-4r4g-j663"],"status":"published","title":"CODESYS Gateway server prone to denial of service attack due to excessive memory allocation","description":"The CODESYS Gateway Server V2 does not verifiy that the size of a request is within expected limits. An unauthenticated attacker may allocate an arbitrary amount of memory, which may lead to a crash of the Gateway due to an out-of-memory condition.","severity":{"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","from":"cve"},"epss":{"day":"2026-11-11","score":0.01164,"percentile":0.67682,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-789"],"published":"2022-06-24T07:46:13Z","modified":"2026-06-17T04:46:20Z","products":[{"vendor":"codesys","product":"codesys gateway server v2"},{"vendor":"codesys","product":"gateway"}],"references":[{"url":"https://customers.codesys.com/index.php?eID=dumpFile\u0026t=f\u0026f=17141\u0026token=17867e35cfd30c77ba0137f9a17b3a557a4b7b66\u0026download=","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-31804"},{"url":"https://github.com/advisories/GHSA-qhgm-4r4g-j663"}],"sources":{"cve":[{"id":"CVE-2022-31804","title":"CODESYS Gateway server prone to denial of service attack due to excessive memory allocation","description":"The CODESYS Gateway Server V2 does not verifiy that the size of a request is within expected limits. An unauthenticated attacker may allocate an arbitrary amount of memory, which may lead to a crash of the Gateway due to an out-of-memory condition.","status":"published","published":"2022-06-24T07:46:13.08Z","modified":"2024-09-16T20:16:34.66Z","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-789"],"updated_at":"2026-11-02T14:34:34.940806Z"}],"euvd":[{"id":"EUVD-2022-53193","description":"The CODESYS Gateway Server V2 does not verifiy that the size of a request is within expected limits. An unauthenticated attacker may allocate an arbitrary amount of memory, which may lead to a crash of the Gateway due to an out-of-memory condition.","status":"published","published":"2022-06-24T07:46:13Z","modified":"2024-09-16T20:16:34Z","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"}],"updated_at":"2026-11-03T00:55:15.468069Z"}],"ghsa":[{"id":"GHSA-qhgm-4r4g-j663","title":"The CODESYS Gateway Server V2 does not verifiy that the size of a request is within expected...","description":"The CODESYS Gateway Server V2 does not verifiy that the size of a request is within expected limits. An unauthenticated attacker may allocate an arbitrary amount of memory, which may lead to a crash of the Gateway due to an out-of-memory condition.","status":"published","published":"2022-06-25T00:01:01Z","modified":"2023-01-27T05:04:51Z","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"}],"cwes":["CWE-789"],"updated_at":"2026-11-02T14:42:34.018822Z"}],"nvd":[{"id":"CVE-2022-31804","description":"The CODESYS Gateway Server V2 does not verifiy that the size of a request is within expected limits. An unauthenticated attacker may allocate an arbitrary amount of memory, which may lead to a crash of the Gateway due to an out-of-memory condition.","status":"published","published":"2022-06-24T08:15:07.527Z","modified":"2026-06-17T04:46:20.533Z","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":"secondary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-789"],"updated_at":"2026-11-02T14:07:22.613788Z"}]}}