mz-automation libiec61850 MMS Request mms_mapping.c checkDataSetAccess out-of-bounds

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-18583
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-03 06:16:37 UTC
Updated2026-08-03 20:17:15 UTC
DescriptionA weakness has been identified in mz-automation libiec61850 up to 1.6.1. This issue affects the function checkDataSetAccess of the file src/iec61850/server/mms_mapping/mms_mapping.c of the component MMS Request Handler. This manipulation causes out-of-bounds read. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 1.6.2 is capable of addressing this issue. Patch name: 062062daf4cb50c7aa76e01d6fb4d58fc9278a7d. Upgrading the affected component is recommended. The vendor was contacted early about this disclosure.

Risk And Classification

Primary CVSS: v4.0 5.5 MEDIUM from [email protected]

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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

EPSS: 0.004960000 probability, percentile 0.398610000 (date 2026-08-05)

Problem Types: CWE-119 | CWE-125 | CWE-125 Out-of-Bounds Read | CWE-119 Memory Corruption

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary5.5MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/C...
4.0CNADECLARED6.9MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
3.1[email protected]Secondary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
3.1CNADECLARED5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
3.0CNADECLARED5.3MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
2.0[email protected]Secondary5AV:N/AC:L/Au:N/C:N/I:N/A:P
2.0CNADECLARED5AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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

CVSS v3.1 Breakdown

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

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

CVSS v3.0 Breakdown

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

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Mz-automation Libiec61850 affected 1.6.0 Not specified
CNA Mz-automation Libiec61850 affected 1.6.1 Not specified
CNA Mz-automation Libiec61850 unaffected 1.6.2 Not specified

References

ReferenceSourceLinkTags
github.com/mz-automation/libiec61850/security/advisories/GHSA-7v2x-39mw-... [email protected] github.com
github.com/gff-cw/information/issues/3 [email protected] github.com
vuldb.com/vuln/385412 [email protected] vuldb.com
vuldb.com/submit/844921 [email protected] vuldb.com
github.com/mz-automation/libiec61850/commit/062062daf4cb50c7aa76e01d6fb4... [email protected] github.com
vuldb.com/vuln/385412/cti [email protected] vuldb.com
github.com/mz-automation/libiec61850/releases/tag/v1.6.2 [email protected] github.com
github.com/mz-automation/libiec61850 [email protected] github.com
vuldb.com/cve/CVE-2026-18583 [email protected] vuldb.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: Chuan Wei (en)

CNA: Carnegie (VulDB User) (en)

CNA: Carnegie (VulDB User) (en)

CNA: VulDB CNA Team (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-08-02T00:00:00.000ZAdvisory disclosed
CNA2026-08-02T02:00:00.000ZVulDB entry created
CNA2026-08-03T08:11:14.000ZVulDB entry last update

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