{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-63033","assignerOrgId":"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6","state":"PUBLISHED","assignerShortName":"icscert","dateReserved":"2026-07-16T22:10:53.026Z","datePublished":"2026-07-30T22:54:25.681Z","dateUpdated":"2026-07-31T19:23:47.085Z"},"containers":{"cna":{"providerMetadata":{"orgId":"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6","shortName":"icscert","dateUpdated":"2026-07-30T22:54:25.681Z"},"title":"MZ Automation lib60870 Out-of-bounds Read","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-125","description":"CWE-125","type":"CWE"}]}],"affected":[{"vendor":"MZ Automation","product":"lib60870","versions":[{"status":"affected","version":"2.4.0"},{"status":"unaffected","version":"2.4.1"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"A crafted IEC 60870-5-104 I-frame with a declared object count exceeding\n what fits in the ASDU body causes InformationObject_ParseObjectAddress \nto read one byte past the end of the heap-allocated message buffer.","supportingMedia":[{"type":"text/html","base64":false,"value":"A crafted IEC 60870-5-104 I-frame with a declared object count exceeding\n what fits in the ASDU body causes InformationObject_ParseObjectAddress \nto read one byte past the end of the heap-allocated message buffer."}]}],"references":[{"url":"https://github.com/mz-automation/lib60870/security/advisories/GHSA-7v97-jmwv-w5j7"},{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-26-211-11"},{"url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-211-11.json"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"LOW","baseSeverity":"MEDIUM","baseScore":6.5,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L"}},{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","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":"MEDIUM","baseScore":6.9,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N"}}],"solutions":[{"lang":"en","value":"MZ Automation recommends users update to version 2.4.1 when available.\nSee MZ Automation advisory for more \ninformation: \n https://github.com/mz-automation/lib60870/security/advisories/GHSA-7v97-jmwv-w5j7","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>MZ Automation recommends users update to version 2.4.1 when available.<br>See MZ Automation advisory for more \ninformation:&nbsp;<br><a href=\"https://github.com/mz-automation/lib60870/security/advisories/GHSA-7v97-jmwv-w5j7\">https://github.com/mz-automation/lib60870/security/advisories/GHSA-7v97-jmwv-w5j7</a></p>"}]}],"credits":[{"lang":"en","value":"arun babu puthuparambil of Central Power Research Institute, Bengaluru, India reported this vulnerability to CISA.","type":"finder"}],"source":{"advisory":"ICSA-26-211-11","discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.4"}},"adp":[{"references":[{"url":"https://github.com/mz-automation/lib60870/security/advisories/GHSA-7v97-jmwv-w5j7","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-31T19:23:16.206329Z","id":"CVE-2026-63033","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"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":"2026-07-31T19:23:47.085Z"}}]}}