{"id":"CVE-2026-82945","aliases":["EUVD-2026-109678","GHSA-849v-9xpp-vgfg"],"status":"published","title":"Memory Corruption via FMMU Configuration Table Overflow","description":"SOEM version 2.0.0 and earlier contains a vulnerability during device configuration where a malicious device can cause memory corruption. The software writes configuration data to a fixed-size array without checking if the array index exceeds its maximum size of EC_MAXFMMU entries. A device presenting more than EC_MAXFMMU configuration blocks can force writes beyond the array boundary, corrupting adjacent memory structures and potentially disrupting subsequent operations.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00169,"percentile":0.06392,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120","CWE-129","CWE-787"],"published":"2026-10-26T08:51:32Z","modified":"2026-10-26T15:16:44Z","products":[{"vendor":"rt-labs ab","product":"soem"}],"references":[{"url":"https://rt-labs.com/wp-content/uploads/2026/10/RRTL-260921-01.pdf","tags":["vendor-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-82945"},{"url":"https://github.com/advisories/GHSA-849v-9xpp-vgfg"}],"sources":{"cve":[{"id":"CVE-2026-82945","title":"Memory Corruption via FMMU Configuration Table Overflow","description":"SOEM version 2.0.0 and earlier contains a vulnerability during device configuration where a malicious device can cause memory corruption. The software writes configuration data to a fixed-size array without checking if the array index exceeds its maximum size of EC_MAXFMMU entries. A device presenting more than EC_MAXFMMU configuration blocks can force writes beyond the array boundary, corrupting adjacent memory structures and potentially disrupting subsequent operations.","status":"published","published":"2026-10-26T08:51:32.194Z","modified":"2026-10-26T14:35:19.284Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-787","CWE-129","CWE-120"],"updated_at":"2026-11-02T13:40:46.161838Z"}],"euvd":[{"id":"EUVD-2026-109678","description":"SOEM version 2.0.0 and earlier contains a vulnerability during device configuration where a malicious device can cause memory corruption. The software writes configuration data to a fixed-size array without checking if the array index exceeds its maximum size of EC_MAXFMMU entries. A device presenting more than EC_MAXFMMU configuration blocks can force writes beyond the array boundary, corrupting adjacent memory structures and potentially disrupting subsequent operations.","status":"published","published":"2026-10-26T08:51:32Z","modified":"2026-10-26T14:35:19Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:59:29.561971Z"}],"ghsa":[{"id":"GHSA-849v-9xpp-vgfg","title":"SOEM version 2.0.0 and earlier contains a vulnerability during device configuration where a...","description":"SOEM version 2.0.0 and earlier contains a vulnerability during device configuration where a malicious device can cause memory corruption. The software writes configuration data to a fixed-size array without checking if the array index exceeds its maximum size of EC_MAXFMMU entries. A device presenting more than EC_MAXFMMU configuration blocks can force writes beyond the array boundary, corrupting adjacent memory structures and potentially disrupting subsequent operations.","status":"published","published":"2026-10-26T09:31:11Z","modified":"2026-10-26T09:31:16Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T15:14:23.372055Z"}],"nvd":[{"id":"CVE-2026-82945","description":"SOEM version 2.0.0 and earlier contains a vulnerability during device configuration where a malicious device can cause memory corruption. The software writes configuration data to a fixed-size array without checking if the array index exceeds its maximum size of EC_MAXFMMU entries. A device presenting more than EC_MAXFMMU configuration blocks can force writes beyond the array boundary, corrupting adjacent memory structures and potentially disrupting subsequent operations.","status":"published","published":"2026-10-26T09:16:36.257Z","modified":"2026-10-26T15:16:44.54Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-120","CWE-129","CWE-787"],"updated_at":"2026-11-02T14:13:03.452847Z"}]}}