Memory Corruption Issue in mz-automation libiec61850 Product
CVE-2026-18582

6.9MEDIUM

Key Information:

Vendor

Mz-automation

Status
Libiec61850
Vendor
CVE Published:
3 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-18582?

A security flaw has been identified in the libiec61850 library from MZ Automation that affects the Reporting_RCBWriteAccessHandler function. This flaw can lead to improper memory management, specifically the free of memory not occurring on the heap. Due to this vulnerability, attackers can exploit the issue remotely, potentially compromising system integrity. Users are advised to update to version 1.6.2, which addresses this security risk, and to apply the patch identified as 5b2a69f44256b8548927d8afdd7ac5f5381abe1e.

Affected Version(s)

libiec61850 1.6.0

libiec61850 1.6.1

libiec61850 1.6.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-18582 - Proof of Concept

References

https://vuldb.com/vuln/385411
vdb-entrytechnical-description
https://vuldb.com/vuln/385411/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-18582
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Carnegie (VulDB User)
VulDB CNA Team
.