{"id":"CVE-2026-8047","aliases":["EUVD-2026-31800","GHSA-x9mr-w23g-rxq7"],"status":"published","title":"Out-of-bounds Write in CODESYS Control","description":"The affected products perform improper length checking when parsing incoming HTTP requests, resulting in a size-limited out-of-bounds write. An unauthenticated remote attacker can exploit this flaw to cause a denial of service via a system crash on the affected device.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00445,"percentile":0.38983,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1284"],"published":"2026-05-26T06:49:54Z","modified":"2026-07-23T11:10:00Z","products":[{"vendor":"codesys","product":"codesys control for beaglebone sl"},{"vendor":"codesys","product":"codesys control for empc-a/imx6 sl"},{"vendor":"codesys","product":"codesys control for iot2000 sl"},{"vendor":"codesys","product":"codesys control for linux arm sl"},{"vendor":"codesys","product":"codesys control for linux sl"},{"vendor":"codesys","product":"codesys control for pfc100 sl"},{"vendor":"codesys","product":"codesys control for pfc200 sl"},{"vendor":"codesys","product":"codesys control for plcnext sl"},{"vendor":"codesys","product":"codesys control for raspberry pi sl"},{"vendor":"codesys","product":"codesys control for wago touch panels 600 sl"},{"vendor":"codesys","product":"codesys control rte (for beckhoff cx) sl"},{"vendor":"codesys","product":"codesys control rte (sl)"},{"vendor":"codesys","product":"codesys control win (sl)"},{"vendor":"codesys","product":"codesys hmi (sl)"},{"vendor":"codesys","product":"codesys runtime toolkit"},{"vendor":"codesys","product":"codesys virtual control sl"}],"references":[{"url":"https://www.certvde.com/en/advisories/VDE-2026-057/"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-8047"},{"url":"https://www.certvde.com/en/advisories/VDE-2026-057"},{"url":"https://github.com/advisories/GHSA-x9mr-w23g-rxq7"}],"sources":{"cve":[{"id":"CVE-2026-8047","title":"Out-of-bounds Write in CODESYS Control","description":"The affected products perform improper length checking when parsing incoming HTTP requests, resulting in a size-limited out-of-bounds write. An unauthenticated remote attacker can exploit this flaw to cause a denial of service via a system crash on the affected device.","status":"published","published":"2026-05-26T06:49:54.813Z","modified":"2026-05-26T10:48:24.087Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"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-1284"],"updated_at":"2026-11-02T13:48:13.398044Z"}],"euvd":[{"id":"EUVD-2026-31800","description":"The affected products perform improper length checking when parsing incoming HTTP requests, resulting in a size-limited out-of-bounds write. An unauthenticated remote attacker can exploit this flaw to cause a denial of service via a system crash on the affected device.","status":"published","published":"2026-05-26T06:49:54Z","modified":"2026-05-26T10:48:24Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T18:21:07.775399Z"}],"ghsa":[{"id":"GHSA-x9mr-w23g-rxq7","title":"The affected products perform improper length checking when parsing incoming HTTP requests,...","description":"The affected products perform improper length checking when parsing incoming HTTP requests, resulting in a size-limited out-of-bounds write. An unauthenticated remote attacker can exploit this flaw to cause a denial of service via a system crash on the affected device.","status":"published","published":"2026-05-26T13:30:55Z","modified":"2026-05-26T13:31:02Z","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"},{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-1284"],"updated_at":"2026-11-02T15:08:18.132911Z"}],"nvd":[{"id":"CVE-2026-8047","description":"The affected products perform improper length checking when parsing incoming HTTP requests, resulting in a size-limited out-of-bounds write. An unauthenticated remote attacker can exploit this flaw to cause a denial of service via a system crash on the affected device.","status":"published","published":"2026-05-26T08:16:22.447Z","modified":"2026-07-23T11:10:00.12Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"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"}],"cwes":["CWE-1284"],"updated_at":"2026-11-02T14:12:20.131508Z"}]}}