CVEvulnerability

CVE-2026-48741

7.5 HIGH Published 2026-10-16 Modified 2026-10-21 Official page ↗
Status
Deferred
Published
2026-10-16
Last modified
2026-10-21
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-129, CWE-252, CWE-476, CWE-754

Description

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.

Related

Weakness · CWE (4)

  • CWE-129 Improper Validation of Array Index weakness
  • CWE-252 Unchecked Return Value weakness
  • CWE-476 NULL Pointer Dereference weakness
  • CWE-754 Improper Check for Unusual or Exceptional Conditions weakness

References