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Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-34596"},{"url":"https://github.com/advisories/GHSA-93x3-2r5r-4375"}],"sources":{"cve":[{"id":"CVE-2021-34596","title":"CODESYS V2 runtime: Access of Uninitialized Pointer may result in denial-of-service","description":"A crafted request may cause a read access to an uninitialized pointer in CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56, resulting in a denial-of-service condition.","status":"published","published":"2021-10-26T09:55:54.408Z","modified":"2024-09-16T22:40:47.921Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-824"],"updated_at":"2026-11-02T14:33:11.59359Z"}],"euvd":[{"id":"EUVD-2021-21246","description":"A crafted request may cause a read access to an uninitialized pointer in CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56, resulting in a denial-of-service condition.","status":"published","published":"2021-10-26T09:55:54Z","modified":"2024-09-16T22:40:47Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T00:55:00.660655Z"}],"ghsa":[{"id":"GHSA-93x3-2r5r-4375","title":"A crafted request may cause a read access to an uninitialized pointer in CODESYS V2 Runtime...","description":"A crafted request may cause a read access to an uninitialized pointer in CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56, resulting in a denial-of-service condition.","status":"published","published":"2022-05-24T19:18:51Z","modified":"2025-08-15T21:31:14Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-824"],"updated_at":"2026-11-02T15:03:19.214105Z"}],"nvd":[{"id":"CVE-2021-34596","description":"A crafted request may cause a read access to an 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