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CVE-2026-82945

Memory Corruption via FMMU Configuration Table Overflow

CVSS score

6.5

EPSS probability

—

Risk score

0.7

Published

3 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

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Vulnerability description

DayBreach AI Explanation

Verified against sources

CVE-2026-82945: SOEM FMMU Configuration Table Overflow Memory Corruption

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

RT-Labs AB SOEM version 2.0.0 and earlier contains a memory corruption vulnerability due to an FMMU configuration table overflow. This flaw allows a malicious device to perform out-of-bounds writes and may cause service disruption.

Why does it matter?

The vulnerability can corrupt adjacent memory structures and potentially disrupt subsequent operations. The patch status is currently unknown, and vendor advisories should be monitored.

What should be done?

  • Follow the vendor advisory
  • Update affected SOEM versions
  • Audit device configurations on the network
Chain of evidence and sources2 verified claims

SOEM 2.0.0 ve önceki sürümler, FMMU yapılandırma tablosu taşması nedeniyle bellek bozulması açığı barındırmaktadır.

S0 · daybreach-canonicalS1 · cvelist

Yazılım, yapılandırma verilerini sabit boyutlu diziye yazar ancak EC_MAXFMMU girdi sınırını kontrol etmez.

S0 · daybreach-canonicalS1 · cvelist
Show the technical text from the sources

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.

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

CWE: CWE-787, CWE-129, CWE-120

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-82945 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1RT-Labs ABSOEM View
Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
6.5CVSS V3_1MEDIUMCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE CNA
6.5CVSS V31MEDIUMCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-82945 is associated with the following CWEs:

CWE-787: Out-of-bounds WriteCWE-129: Common Weakness Enumeration Entry CWE-129CWE-120: Common Weakness Enumeration Entry CWE-120

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-82945 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureBitişik ağ
PermissionsGerekmiyor
UserGerekmiyor

Official Sources and Advisories

https://rt-labs.com/wp-content/uploads/2026/10/RRTL-260921-01.pdfvendor-advisory

CVSS Vector Radar Chart

6.5 / 10
Attack VectorAdjacentComplexityLowPrivilegesNoneUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityHigh

Vulnerability Scoring Details

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack VectorAdjacent network
Attack ComplexityLow
Privileges RequiredNone required
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)High

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

RA
RT-Labs AB logo
RT-Labs AB

Weakness Type (CWE & CAPEC)

CWE-787 CWE-129 CWE-120

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CVE-2026-82945 · Memory Corruption via FMMU Configuration…