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 byte past the end of the heap-allocated message buffer.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

No history.

Information

Published : 2026-07-30 23:16

Updated : 2026-09-08 19:30

NVD link : CVE-2026-63033

Mitre link : CVE-2026-63033

CVE.ORG link : CVE-2026-63033

JSON object : View

Products Affected

No product.

CWE

CWE-125

Out-of-bounds Read

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