{"id":"CVE-2026-48741","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-48741","generatedAt":"2026-10-28T01:46:52.741Z","title":"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.","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.","published":"2026-10-16T16:18:12.000Z","lastModified":"2026-10-21T03:17:19.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-129","CWE-252","CWE-476","CWE-754"],"affected":[],"epss":{"score":0.00524,"percentile":0.44197,"date":"2026-10-26","history":[{"date":"2026-10-17","score":0.00432,"percentile":0.35963}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.52%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-16T16:18:12.000Z","detail":{"score":"7.5","severity":"HIGH","publishedAt":"2026-10-16T16:18:11.943Z"},"summary":"New CVE, high severity (CVSS 7.5)."}],"references":[{"url":"https://github.com/mz-automation/libiec61850/commit/7c15310405def00cac628ebde4ce1404bfb8a411","source":"security-advisories@github.com"},{"url":"https://github.com/mz-automation/libiec61850/releases/tag/v1.6.2","source":"security-advisories@github.com"},{"url":"https://github.com/mz-automation/libiec61850/security/advisories/GHSA-8mfr-hq64-9w33","source":"security-advisories@github.com"},{"url":"https://github.com/mz-automation/libiec61850/security/advisories/GHSA-8mfr-hq64-9w33","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-48741","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}