HIGHCVSS v3.1 7.5Vulnerability
CVE-2026-48741
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.
Properties
- Severity
- HIGH
- Nvd fetched at
- 2026-10-20T21:14:08.448323+00:00
- Epss score
- 0.00432
- Cvss severity
- HIGH
- Cvss score
- 7.5
- Retrieved at
- 2026-10-21T01:24:49+00:00
- Last source
- FIRST EPSS
- Score
- 7.5
- Cvss version
- 3.1
- Cve id
- CVE-2026-48741
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- First seen by Signal
- 2026-10-18T13:39:03+00:00
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Published at
- 2026-10-16T16:18:11.943
- Last modified
- 2026-10-16T20:04:29.760
- Epss percentile
- 0.36085
Related Entities (4)
HAS_WEAKNESS (4)
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