Vulnerability · Published Jul 23, 2026 · Assigned by icscert
CVE-2026-49035Stack-based Buffer Overflow in MZ Automation libIEC61850
High 8.1
In plain English
A high-severity heap buffer overflow in libIEC61850 from MZ Automation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.6%top 50.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
The affected product is vulnerable to a heap-based buffer overflow via a crafted MMS Initiate request. Remote code execution (RCE) has been demonstrated when ASLR is disabled; memory corruption or denial of service may occur in configurations where ASLR is enabled.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| MZ Automation | libIEC61850 | 1.0.0 – through 1.6.1 |
Weakness: CWE-122 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-204-06 government-resource