CVE-2026-48741

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Source

https://cve.org/CVERecord?id=CVE-2026-48741

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48741.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-48741

Aliases

GHSA-8mfr-hq64-9w33

Published

2026-10-16T15:45:32Z

Modified

2026-10-17T02:48:23Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Summary

libIEC61850: Remote NULL dereference in MMS Read alternate-access sub-array path leads to server-side DoS

Details

libIEC61850 is an open-source implementation of IEC 61850 client and server protocols including MMS, GOOSE, Sampled Values, and R-Session. Prior to 1.6.2, alternateArrayAccess in src/mms/iso_mms/server/mms_read_service.c does not validate an alternate-access sub-array range when numberOfElements is greater than zero. An out-of-range MmsValue_getElement call returns NULL, and the sub-array branch passes that value to MmsValue_isDeletable, causing a NULL pointer dereference. A remote MMS Read request can therefore crash servers whose data models contain arrays, while the single-element error path handles the same invalid index safely. This issue is fixed in version 1.6.2.

Database specific

{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-129",
        "CWE-252",
        "CWE-476",
        "CWE-754"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48741.json"
}

References

Affected packages

Git / github.com/mz-automation/libiec61850

Affected ranges

Type

GIT

Repo

https://github.com/mz-automation/libiec61850

Events

Introduced

Fixed

f0f797bf955da763353f7081c892a1ff6b55e5a1

Database specific

Show details

{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "1.6.2"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

v1.*

v1.0.0

v1.0.1

v1.1

v1.2.0

v1.2.1

v1.2.2

v1.3.0

v1.4.0

v1.4.1

v1.6.0

v1.6.1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48741.json"