{"id":"CVE-2026-63033","summary":"MZ Automation lib60870 Out-of-bounds Read","details":"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.","aliases":["GHSA-7v97-jmwv-w5j7"],"modified":"2026-08-02T03:31:53.447392710Z","published":"2026-07-30T22:54:25.681Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63033.json","cna_assigner":"icscert","cwe_ids":["CWE-125"]},"references":[{"type":"WEB","url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-211-11.json"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63033.json"},{"type":"ADVISORY","url":"https://github.com/mz-automation/lib60870/security/advisories/GHSA-7v97-jmwv-w5j7"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63033"},{"type":"ADVISORY","url":"https://www.cisa.gov/news-events/ics-advisories/icsa-26-211-11"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mz-automation/lib60870","events":[{"introduced":"083dc8ecc222b0e07a04721075134ee7836ca6af"},{"last_affected":"083dc8ecc222b0e07a04721075134ee7836ca6af"}],"database_specific":{"extracted_events":[{"introduced":"2.4.0"},{"last_affected":"2.4.0"}],"source":"AFFECTED_FIELD"}}],"versions":["2.4.0","v2.4.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63033.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"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"}]}