CVE-2026-48741High· 7.5▾ MidnightPoC availablelibIEC61850 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 validat…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 41.3 · likelihood 0.1 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 17.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.4%
Last analysed / modified upstream
Exploit / PoC code exists
0.4% → 0.5%
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.
libiec61850 < 1.6.2Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-48503High· 7.5libIEC61850: Remote information disclosure in MMS file service via out-of-range initialPosition in fileOpen followed by fileRead
CVE-2026-68908Medium· 5.3libIEC61850: Oversized RptID can trigger invalid free of a stack-backed visible string in the report send path
CVE-2026-68906High· 8.7libIEC61850: Infinite loop and out-of-bounds read in ACSE parseUserInformation when parsing a malformed AARE PDU
CVE-2026-68907High· 8.2libIEC61850: Server-side out-of-bounds stack read in association-specific dynamic dataset creation due to reversed StringUtils_copyStringToBuffer arguments
CVE-2026-57446Medium· 5.3libIEC61850: Server-side double free in MMS ObtainFile task reuse due to stale FILE* handle
CVE-2026-107222Medium· 6.5Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets