{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-50103","assignerOrgId":"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6","state":"PUBLISHED","assignerShortName":"icscert","dateReserved":"2026-06-09T20:01:29.578Z","datePublished":"2026-07-23T20:50:42.198Z","dateUpdated":"2026-07-24T13:41:40.192Z"},"containers":{"cna":{"providerMetadata":{"orgId":"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6","shortName":"icscert","dateUpdated":"2026-07-23T20:50:42.198Z"},"title":"Improper Handling of  Syntactically Invalid Structure in MZ Automation libIEC61850","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-228","description":"CWE-228 Improper Handling of Syntactically Invalid Structure","type":"CWE"}]}],"affected":[{"vendor":"MZ Automation","product":"libIEC61850","versions":[{"status":"affected","version":"1.0.0","lessThanOrEqual":"1.6.1","versionType":"custom"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"A NULL pointer dereference in the L2 GOOSE and R-GOOSE shared parser, which may allow a network-adjacent attacker to crash a subscribing application by sending a crafted GOOSE frame containing a malformed TLV value.","supportingMedia":[{"type":"text/html","base64":false,"value":"A NULL pointer dereference in the L2 GOOSE and R-GOOSE shared parser, which may allow a network-adjacent attacker to crash a subscribing application by sending a crafted GOOSE frame containing a malformed TLV value."}]}],"references":[{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-26-204-06","tags":["government-resource"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseSeverity":"MEDIUM","baseScore":6.5,"vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}},{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"ADJACENT","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"HIGH","baseScore":7.1,"vectorString":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}}],"solutions":[{"lang":"en","value":"MZ Automation recommends updating to the latest build of the libIEC61850 standard. Documentation can be found at https://github.com/mz-automation/libiec61850.\n https://github.com/mz-automation/libiec61850","supportingMedia":[{"type":"text/html","base64":false,"value":"MZ Automation recommends updating to the latest build of the libIEC61850 standard. Documentation can be found at https://github.com/mz-automation/libiec61850.<br><a href=\"https://github.com/mz-automation/libiec61850\">https://github.com/mz-automation/libiec61850</a>"}]}],"credits":[{"lang":"en","value":"Abhinav Agarwal reported this vulnerability to CISA","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.4"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-24T13:41:29.712840Z","id":"CVE-2026-50103","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-24T13:41:40.192Z"}}]}}