CVE-2026-63550 — MZ Automation libiec61850 Out-of-bounds Read
The MMS BER decoder contains a boundary-handling flaw in the processing of certain fields within confirmed-request messages. When a crafted BER-encoded element is received ove…
Published: 2026-07-30 · CVSS: 7.1 · CVSS 4.0
The MMS BER decoder contains a boundary-handling flaw in the processing of certain fields within confirmed-request messages. When a crafted BER-encoded element is received over an established MMS session (TCP port 102), the decoder may advance its internal read position incorrectly, leading to a heap out-of-bounds read. This condition causes the MMS handling process to terminate unexpectedly, resulting in a denial-of-service.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7