PT-2026-66630 · Mz Automation · Lib60870

CVE-2026-61893 · Published 2026-07-30 · Updated 2026-07-30

Mitre

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

A crafted IEC 60870-5-104 I-frame with TypeID 104 (C TS NA 1) and an inflated object count causes TestCommand getFromBuffer to read one byte past the end of the heap-allocated message buffer.

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2026-61893

Affected Products

Lib60870

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-61893 · Security Note
• https://github.com/mz-automation/lib60870/security/advisories/GHSA-g3w7-x5rx-83xm · Note
• https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-211-11.json · Note
• https://cisa.gov/news-events/ics-advisories/icsa-26-211-11 · Note