{"id":"CVE-2026-82945","state":"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.","publishedAt":"2026-10-26T08:51:32.194Z","updatedAt":"2026-10-26T14:35:19.284Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"ENISA"},"assigner":"ENISA","products":["RT-Labs AB SOEM"],"affected":[{"vendor":"RT-Labs AB","product":"SOEM","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"2.0.1","versionType":"semver"}]}],"references":["https://rt-labs.com/wp-content/uploads/2026/10/RRTL-260921-01.pdf"],"weaknesses":["CWE-787","CWE-129","CWE-120"],"ingestedAt":"2026-10-29T20:13:15.269Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/82xxx/CVE-2026-82945.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-82945","state":"PUBLISHED","datePublished":"2026-10-26T08:51:32.194Z","dateUpdated":"2026-10-26T14:35:19.284Z","assignerShortName":"ENISA","assignerOrgId":"a6d3dc9e-0591-4a13-bce7-0f5b31ff6158","dateReserved":"2026-08-31T12:26:22.054Z"},"containers":{"cna":{"title":"Memory Corruption via FMMU Configuration Table Overflow","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"RT-Labs AB","product":"SOEM","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"2.0.1","versionType":"semver"}]}],"references":[{"url":"https://rt-labs.com/wp-content/uploads/2026/10/RRTL-260921-01.pdf","tags":["vendor-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseSeverity":"MEDIUM","baseScore":6.5,"vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-787","lang":"en","description":"CWE-787 Out-of-bounds write","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-129","lang":"en","description":"CWE-129 Improper validation of array index","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-120","lang":"en","description":"CWE-120 Buffer Copy without Checking Size of Input (‘Classic Buffer Overflow’)","type":"CWE"}]}],"providerMetadata":{"shortName":"ENISA","orgId":"a6d3dc9e-0591-4a13-bce7-0f5b31ff6158","dateUpdated":"2026-10-26T08:51:32.194Z"},"credits":[{"lang":"en","value":"f0rw4rd / quellsec.dev, Brian Willows / graith.co.uk","type":"finder"}],"x_generator":{"engine":"Vulnogram 1.0.5"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-82945","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-10-26T13:25:37.512009Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-26T14:35:19.284Z"}}]}}}