CVE-2026-49035
Stack-based Buffer Overflow in MZ Automation libIEC61850
- State
- Published
- Severity
- 9.2 Critical
- Published
- Jul 23, 2026
- Updated
- Jul 24, 2026
- Reserved
- Jun 9, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.2 Critical | 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 | icscert |
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | icscert |
Weaknesses
- CWE-122 Heap-based buffer overflow
Affected Products
| Product | Versions |
|---|---|
libIEC61850MZ Automation |
|
References
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-204-06government-resource
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