What is CVE-2026-61893?

CVE-2026-61893 is a medium-severity vulnerability in Mz Automation Lib60870, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2026-07-30.

How severe is CVE-2026-61893?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Out-of-bounds Read in Mz Automation Lib60870

CVE-2026-61893

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.

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L.

Affected products

Mz Automation Lib60870 — versions 2.4.0, 2.4.1

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

ics-cert@hq.dhs.gov
ics-cert@hq.dhs.gov
ics-cert@hq.dhs.gov

Frequently asked questions

What is CVE-2026-61893?: CVE-2026-61893 is a medium-severity vulnerability in Mz Automation Lib60870, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2026-07-30.
How severe is CVE-2026-61893?: Medium severity. CVSS v3 base score is 6.5 out of 10.