CVE-2026-49035: MZ Automation libIEC61850

Stack-based Buffer Overflow in MZ Automation libIEC61850

CVSS 9.2 CriticalCriticalEPSS 0.0061 · 49th percentile

Critical, because:

CVSS score 9.2: 9.0 or more.

Published by the CVE Program (CNA: icscert) at 23 Jul 2026, 20:48 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
MZ Automation	libIEC61850	affected 1.0.0 to 1.6.1, inclusive custom Other versions: unaffected

Identifiers

CVE-2026-49035

CNA

icscert

Weakness (CWE)

CWE-122

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.1	High	3.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	CNA (icscert)
9.2	Critical	4.0	CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	CNA (icscert)Used for this record

CISA KEV Not listed.
EPSS 0.0061, the 49th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 23 Jul 2026. New records show when each source confirmed them.

Sources

References from the CNA

www.cisa.gov/news-events/ics-advisories/icsa-26-204-06 government-resource

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.