Vulnerability details
CVE-2026-49035
MZ Automation libIEC61850
Stack-based Buffer Overflow in MZ Automation libIEC61850
CVSS 4.0
9.2Critical
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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.2Critical | 4.0 | CVEProject cvelistV5 (CNA) (icscert) | 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 |
| 8.1High | 3.1 | CVEProject cvelistV5 (CNA) (icscert) | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| MZ Automation | libIEC61850 | 1.0.0 ≤ v ≤ 1.6.1 | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://www.cisa.gov/news-events/ics-advisories/icsa-26-204-06 government-resource
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Details
- Published
- 2026-07-24
- Last updated
- 2026-07-24
- State
- Published
- Assigner (CNA)
- icscert
Exploit prediction (EPSS)
0.61%
Probability of exploitation in 30 days
49.6%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-122Heap-based buffer overflow