Memory Corruption via FMMU Configuration Table Overflow

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-82945
StatePUBLISHED
AssignerENISA
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-26 09:16:36 UTC
Updated2026-10-26 15:16:44 UTC
DescriptionSOEM 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.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from a6d3dc9e-0591-4a13-bce7-0f5b31ff6158

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-120 | CWE-129 | CWE-787 | CWE-787 CWE-787 Out-of-bounds write | CWE-129 CWE-129 Improper validation of array index | CWE-120 CWE-120 Buffer Copy without Checking Size of Input (‘Classic Buffer Overflow’)

VersionSourceTypeScoreSeverityVector
3.1a6d3dc9e-0591-4a13-bce7-0f5b31ff6158Secondary6.5MEDIUMCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNACVSS6.5MEDIUMCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA RT-Labs AB SOEM affected 2.0.1 semver Not specified

References

ReferenceSourceLinkTags
rt-labs.com/wp-content/uploads/2026/10/RRTL-260921-01.pdf a6d3dc9e-0591-4a13-bce7-0f5b31ff6158 rt-labs.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: f0rw4rd / quellsec.dev, Brian Willows / graith.co.uk (en)

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