MEDIUM 6.9 NVD
CVE-2026-63033
A crafted IEC 60870-5-104 I-frame with a declared object count exceeding what fits in the ASDU body causes InformationObject_ParseObjectAddress to read one by
A crafted IEC 60870-5-104 I-frame with a declared object count exceeding
what fits in the ASDU body causes InformationObject_ParseObjectAddress
to read one byte past the end of the heap-allocated message buffer.
References
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-211-11.json
- https://github.com/mz-automation/lib60870/security/advisories/GHSA-7v97-jmwv-w5j7
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-211-11
- https://github.com/mz-automation/lib60870/security/advisories/GHSA-7v97-jmwv-w5j7
This medium severity vulnerability with a CVSS score of 6.9 was published on 2026-07-30 via NVD.
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